3957702381 has 12 divisors (see below), whose sum is σ = 5757810240. Its totient is φ = 2619485640.

The previous prime is 3957702349. The next prime is 3957702383. The reversal of 3957702381 is 1832077593.

It is a happy number.

It is not a de Polignac number, because 3957702381 - 2⁵ = 3957702349 is a prime.

It is a super-2 number, since 2×3957702381² = 31326816273146138322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957702383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1580565 + ... + 1583066.

It is an arithmetic number, because the mean of its divisors is an integer number (479817520).

Almost surely, 2^3957702381 is an apocalyptic number.

It is an amenable number.

3957702381 is a deficient number, since it is larger than the sum of its proper divisors (1800107859).

3957702381 is a wasteful number, since it uses less digits than its factorization.

3957702381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163776 (or 3163773 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 3957702381 is about 62910.2724600681. The cubic root of 3957702381 is about 1581.7859393124.

The spelling of 3957702381 in words is "three billion, nine hundred fifty-seven million, seven hundred two thousand, three hundred eighty-one".