2179642372 has 6 divisors (see below), whose sum is σ = 3814374158. Its totient is φ = 1089821184.

The previous prime is 2179642337. The next prime is 2179642373. The reversal of 2179642372 is 2732469712.

It can be written as a sum of positive squares in only one way, i.e., 1821070276 + 358572096 = 42674^2 + 18936^2 .

It is not an unprimeable number, because it can be changed into a prime (2179642373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272455293 + ... + 272455300.

Almost surely, 2^2179642372 is an apocalyptic number.

It is an amenable number.

2179642372 is a deficient number, since it is larger than the sum of its proper divisors (1634731786).

2179642372 is a wasteful number, since it uses less digits than its factorization.

2179642372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544910597 (or 544910595 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 2179642372 is about 46686.6401875312. The cubic root of 2179642372 is about 1296.5673487928.

The spelling of 2179642372 in words is "two billion, one hundred seventy-nine million, six hundred forty-two thousand, three hundred seventy-two".