3897557875 has 16 divisors (see below), whose sum is σ = 5120163360. Its totient is φ = 2953936800.

The previous prime is 3897557849. The next prime is 3897557879. The reversal of 3897557875 is 5787557983.

It is a happy number.

It is not a de Polignac number, because 3897557875 - 2¹⁷ = 3897426803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3897557879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 818164 + ... + 822913.

It is an arithmetic number, because the mean of its divisors is an integer number (320010210).

Almost surely, 2^3897557875 is an apocalyptic number.

3897557875 is a deficient number, since it is larger than the sum of its proper divisors (1222605485).

3897557875 is a wasteful number, since it uses less digits than its factorization.

3897557875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641111 (or 1641101 counting only the distinct ones).

The product of its digits is 74088000, while the sum is 64.

The square root of 3897557875 is about 62430.4242737465. The cubic root of 3897557875 is about 1573.7322964469.

The spelling of 3897557875 in words is "three billion, eight hundred ninety-seven million, five hundred fifty-seven thousand, eight hundred seventy-five".