2157361518 has 16 divisors (see below), whose sum is σ = 4646624976. Its totient is φ = 663803520.

The previous prime is 2157361487. The next prime is 2157361529. The reversal of 2157361518 is 8151637512.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13829163 + ... + 13829318.

It is an arithmetic number, because the mean of its divisors is an integer number (290414061).

Almost surely, 2^2157361518 is an apocalyptic number.

2157361518 is an abundant number, since it is smaller than the sum of its proper divisors (2489263458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2157361518 is a wasteful number, since it uses less digits than its factorization.

2157361518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27658499.

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

The square root of 2157361518 is about 46447.4059340239. The cubic root of 2157361518 is about 1292.1342627902.

The spelling of 2157361518 in words is "two billion, one hundred fifty-seven million, three hundred sixty-one thousand, five hundred eighteen".