3157158621 has 32 divisors (see below), whose sum is σ = 4494372480. Its totient is φ = 1964509184.

The previous prime is 3157158577. The next prime is 3157158623. The reversal of 3157158621 is 1268517513.

It is a cyclic number.

It is not a de Polignac number, because 3157158621 - 2¹⁴ = 3157142237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3157158621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157158623) 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 31 ways as a sum of consecutive naturals, for example, 4622146 + ... + 4622828.

It is an arithmetic number, because the mean of its divisors is an integer number (140449140).

Almost surely, 2^3157158621 is an apocalyptic number.

It is an amenable number.

3157158621 is a deficient number, since it is larger than the sum of its proper divisors (1337213859).

3157158621 is a wasteful number, since it uses less digits than its factorization.

3157158621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its digits is 50400, while the sum is 39.

The square root of 3157158621 is about 56188.5986744642. The cubic root of 3157158621 is about 1467.0068240355.

The spelling of 3157158621 in words is "three billion, one hundred fifty-seven million, one hundred fifty-eight thousand, six hundred twenty-one".