3851138475 has 72 divisors (see below), whose sum is σ = 6990663680. Its totient is φ = 2026503360.

The previous prime is 3851138471. The next prime is 3851138563. The reversal of 3851138475 is 5748311583.

It is a happy number.

3851138475 is a `hidden beast` number, since 38 + 511 + 38 + 4 + 75 = 666.

It is not a de Polignac number, because 3851138475 - 2² = 3851138471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3851138475.

It is not an unprimeable number, because it can be changed into a prime (3851138471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8772306 + ... + 8772744.

Almost surely, 2^3851138475 is an apocalyptic number.

3851138475 is a deficient number, since it is larger than the sum of its proper divisors (3139525205).

3851138475 is a wasteful number, since it uses less digits than its factorization.

3851138475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 881 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 3851138475 is about 62057.5416448315. The cubic root of 3851138475 is about 1567.4596801362.

The spelling of 3851138475 in words is "three billion, eight hundred fifty-one million, one hundred thirty-eight thousand, four hundred seventy-five".