2153165377 has 4 divisors (see below), whose sum is σ = 2348907696. Its totient is φ = 1957423060.

The previous prime is 2153165317. The next prime is 2153165381. The reversal of 2153165377 is 7735613512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2153165377 - 2¹⁵ = 2153132609 is a prime.

It is a super-2 number, since 2×2153165377² = 9272242281423104258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153165317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97871143 + ... + 97871164.

It is an arithmetic number, because the mean of its divisors is an integer number (587226924).

Almost surely, 2^2153165377 is an apocalyptic number.

It is an amenable number.

2153165377 is a deficient number, since it is larger than the sum of its proper divisors (195742319).

2153165377 is a wasteful number, since it uses less digits than its factorization.

2153165377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195742318.

The product of its digits is 132300, while the sum is 40.

The square root of 2153165377 is about 46402.2130614478. The cubic root of 2153165377 is about 1291.2959707955.

Adding to 2153165377 its reverse (7735613512), we get a palindrome (9888778889).

The spelling of 2153165377 in words is "two billion, one hundred fifty-three million, one hundred sixty-five thousand, three hundred seventy-seven".