3972157935 has 12 divisors (see below), whose sum is σ = 6355843272. Its totient is φ = 2118354048.

The previous prime is 3972157919. The next prime is 3972158009. The reversal of 3972157935 is 5397512793.

It is not a de Polignac number, because 3972157935 - 2⁴ = 3972157919 is a prime.

It is a congruent number.

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, 235959 + ... + 252231.

It is an arithmetic number, because the mean of its divisors is an integer number (529653606).

Almost surely, 2^3972157935 is an apocalyptic number.

3972157935 is a deficient number, since it is larger than the sum of its proper divisors (2383685337).

3972157935 is an frugal number, since it uses more digits than its factorization.

3972157935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32554 (or 16281 counting only the distinct ones).

The product of its digits is 1786050, while the sum is 51.

The square root of 3972157935 is about 63025.0579928333. The cubic root of 3972157935 is about 1583.7094298690.

The spelling of 3972157935 in words is "three billion, nine hundred seventy-two million, one hundred fifty-seven thousand, nine hundred thirty-five".