3938453631 has 32 divisors (see below), whose sum is σ = 7060538880. Its totient is φ = 2118158208.

The previous prime is 3938453611. The next prime is 3938453671. The reversal of 3938453631 is 1363548393.

3938453631 is a `hidden beast` number, since 3 + 9 + 3 + 8 + 4 + 5 + 3 + 631 = 666.

It is not a de Polignac number, because 3938453631 - 2¹⁸ = 3938191487 is a prime.

It is a super-2 number, since 2×3938453631² = 31022834007074168322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938453611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609681 + ... + 616106.

It is an arithmetic number, because the mean of its divisors is an integer number (220641840).

Almost surely, 2^3938453631 is an apocalyptic number.

3938453631 is a deficient number, since it is larger than the sum of its proper divisors (3122085249).

3938453631 is a wasteful number, since it uses less digits than its factorization.

3938453631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225820 (or 1225814 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 3938453631 is about 62757.1002437174. The cubic root of 3938453631 is about 1579.2173701042.

The spelling of 3938453631 in words is "three billion, nine hundred thirty-eight million, four hundred fifty-three thousand, six hundred thirty-one".