3957761970 has 24 divisors (see below), whose sum is σ = 10290181356. Its totient is φ = 1055403168.

The previous prime is 3957761963. The next prime is 3957761981. The reversal of 3957761970 is 791677593.

3957761970 is a `hidden beast` number, since 3 + 9 + 577 + 61 + 9 + 7 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3870208521 + 87553449 = 62211^2 + 9357^2 .

It is a super-2 number, since 2×3957761970² = 31327759622356561800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21987477 + ... + 21987656.

Almost surely, 2^3957761970 is an apocalyptic number.

3957761970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3957761970 is an abundant number, since it is smaller than the sum of its proper divisors (6332419386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3957761970 is a wasteful number, since it uses less digits than its factorization.

3957761970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43975146 (or 43975143 counting only the distinct ones).

The product of its (nonzero) digits is 2500470, while the sum is 54.

The square root of 3957761970 is about 62910.7460613845. The cubic root of 3957761970 is about 1581.7938779731.

The spelling of 3957761970 in words is "three billion, nine hundred fifty-seven million, seven hundred sixty-one thousand, nine hundred seventy".