2157013870 has 32 divisors (see below), whose sum is σ = 4246732800. Its totient is φ = 782305440.

The previous prime is 2157013861. The next prime is 2157013871. The reversal of 2157013870 is 783107512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157013871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16531 + ... + 67729.

It is an arithmetic number, because the mean of its divisors is an integer number (132710400).

Almost surely, 2^2157013870 is an apocalyptic number.

2157013870 is a deficient number, since it is larger than the sum of its proper divisors (2089718930).

2157013870 is a wasteful number, since it uses less digits than its factorization.

2157013870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51600.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 2157013870 is about 46443.6633998654. The cubic root of 2157013870 is about 1292.0648520741.

The spelling of 2157013870 in words is "two billion, one hundred fifty-seven million, thirteen thousand, eight hundred seventy".