3157638213 has 16 divisors (see below), whose sum is σ = 4261155840. Its totient is φ = 2079727104.

The previous prime is 3157638199. The next prime is 3157638229. The reversal of 3157638213 is 3128367513.

It is not a de Polignac number, because 3157638213 - 2⁵ = 3157638181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157638313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91228 + ... + 120986.

It is an arithmetic number, because the mean of its divisors is an integer number (266322240).

Almost surely, 2^3157638213 is an apocalyptic number.

It is an amenable number.

3157638213 is a deficient number, since it is larger than the sum of its proper divisors (1103517627).

3157638213 is a wasteful number, since it uses less digits than its factorization.

3157638213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30188.

The product of its digits is 90720, while the sum is 39.

The square root of 3157638213 is about 56192.8662109346. The cubic root of 3157638213 is about 1467.0811027566.

The spelling of 3157638213 in words is "three billion, one hundred fifty-seven million, six hundred thirty-eight thousand, two hundred thirteen".