3851172135 has 28 divisors (see below), whose sum is σ = 6928946712. Its totient is φ = 2053956528.

The previous prime is 3851172113. The next prime is 3851172161. The reversal of 3851172135 is 5312711583.

It is a happy number.

3851172135 is a `hidden beast` number, since 3 + 8 + 511 + 7 + 2 + 135 = 666.

3851172135 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3851172135 - 2⁵ = 3851172103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3851172135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 524637 + ... + 531926.

Almost surely, 2^3851172135 is an apocalyptic number.

3851172135 is a deficient number, since it is larger than the sum of its proper divisors (3077774577).

3851172135 is an equidigital number, since it uses as much as digits as its factorization.

3851172135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056586 (or 1056571 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 3851172135 is about 62057.8128441536. The cubic root of 3851172135 is about 1567.4642467979.

The spelling of 3851172135 in words is "three billion, eight hundred fifty-one million, one hundred seventy-two thousand, one hundred thirty-five".