1377381 has 4 divisors (see below), whose sum is σ = 1836512. Its totient is φ = 918252.

The previous prime is 1377379. The next prime is 1377403. The reversal of 1377381 is 1837731.

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 not a de Polignac number, because 1377381 - 2¹ = 1377379 is a prime.

It is a super-2 number, since 2×1377381² = 3794356838322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229561 + ... + 229566.

It is an arithmetic number, because the mean of its divisors is an integer number (459128).

2^1377381 is an apocalyptic number.

It is an amenable number.

1377381 is a deficient number, since it is larger than the sum of its proper divisors (459131).

1377381 is an equidigital number, since it uses as much as digits as its factorization.

1377381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459130.

The product of its digits is 3528, while the sum is 30.

The square root of 1377381 is about 1173.6187626312. The cubic root of 1377381 is about 111.2631529287.

The spelling of 1377381 in words is "one million, three hundred seventy-seven thousand, three hundred eighty-one".