3913657431 has 16 divisors (see below), whose sum is σ = 5587250400. Its totient is φ = 2428034048.

The previous prime is 3913657409. The next prime is 3913657441. The reversal of 3913657431 is 1347563193.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3913657431 - 2²⁵ = 3880102999 is a prime.

It is a super-2 number, since 2×3913657431² = 30633428974443039522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913657441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426576 + ... + 435653.

It is an arithmetic number, because the mean of its divisors is an integer number (349203150).

Almost surely, 2^3913657431 is an apocalyptic number.

3913657431 is a deficient number, since it is larger than the sum of its proper divisors (1673592969).

3913657431 is a wasteful number, since it uses less digits than its factorization.

3913657431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862338.

The product of its digits is 204120, while the sum is 42.

The square root of 3913657431 is about 62559.2313811479. The cubic root of 3913657431 is about 1575.8961801225.

The spelling of 3913657431 in words is "three billion, nine hundred thirteen million, six hundred fifty-seven thousand, four hundred thirty-one".