2149915642 has 64 divisors (see below), whose sum is σ = 4043022336. Its totient is φ = 836478720.

The previous prime is 2149915637. The next prime is 2149915643. The reversal of 2149915642 is 2465199412.

It is not an unprimeable number, because it can be changed into a prime (2149915643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792853 + ... + 795559.

It is an arithmetic number, because the mean of its divisors is an integer number (63172224).

Almost surely, 2^2149915642 is an apocalyptic number.

2149915642 is a deficient number, since it is larger than the sum of its proper divisors (1893106694).

2149915642 is a wasteful number, since it uses less digits than its factorization.

2149915642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its digits is 155520, while the sum is 43.

The square root of 2149915642 is about 46367.1828128473. The cubic root of 2149915642 is about 1290.6460001836.

The spelling of 2149915642 in words is "two billion, one hundred forty-nine million, nine hundred fifteen thousand, six hundred forty-two".