2109148493 has 4 divisors (see below), whose sum is σ = 2111089920. Its totient is φ = 2107207068.

The previous prime is 2109148477. The next prime is 2109148499. The reversal of 2109148493 is 3948419012.

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 2109148493 - 2⁴ = 2109148477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109148493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109148499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969083 + ... + 971256.

It is an arithmetic number, because the mean of its divisors is an integer number (527772480).

Almost surely, 2^2109148493 is an apocalyptic number.

It is an amenable number.

2109148493 is a deficient number, since it is larger than the sum of its proper divisors (1941427).

2109148493 is a wasteful number, since it uses less digits than its factorization.

2109148493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941426.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 2109148493 is about 45925.4667151026. The cubic root of 2109148493 is about 1282.4360535914.

The spelling of 2109148493 in words is "two billion, one hundred nine million, one hundred forty-eight thousand, four hundred ninety-three".