3957038781 has 32 divisors (see below), whose sum is σ = 5723827200. Its totient is φ = 2423387520.

The previous prime is 3957038753. The next prime is 3957038807. The reversal of 3957038781 is 1878307593.

It is not a de Polignac number, because 3957038781 - 2¹³ = 3957030589 is a prime.

It is a super-2 number, since 2×3957038781² = 31316311828675931922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957038681) 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 31 ways as a sum of consecutive naturals, for example, 385210 + ... + 395348.

It is an arithmetic number, because the mean of its divisors is an integer number (178869600).

Almost surely, 2^3957038781 is an apocalyptic number.

It is an amenable number.

3957038781 is a deficient number, since it is larger than the sum of its proper divisors (1766788419).

3957038781 is a wasteful number, since it uses less digits than its factorization.

3957038781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 3957038781 is about 62904.9980605675. The cubic root of 3957038781 is about 1581.6975267503.

The spelling of 3957038781 in words is "three billion, nine hundred fifty-seven million, thirty-eight thousand, seven hundred eighty-one".