2157394562 has 16 divisors (see below), whose sum is σ = 3270328992. Its totient is φ = 1067309760.

The previous prime is 2157394553. The next prime is 2157394579. The reversal of 2157394562 is 2654937512.

It is a super-2 number, since 2×2157394562² = 9308702592294343688, which contains 22 as substring.

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, 182813 + ... + 194255.

It is an arithmetic number, because the mean of its divisors is an integer number (204395562).

Almost surely, 2^2157394562 is an apocalyptic number.

2157394562 is a deficient number, since it is larger than the sum of its proper divisors (1112934430).

2157394562 is a wasteful number, since it uses less digits than its factorization.

2157394562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12433.

The product of its digits is 453600, while the sum is 44.

The square root of 2157394562 is about 46447.7616468221. The cubic root of 2157394562 is about 1292.1408599022.

The spelling of 2157394562 in words is "two billion, one hundred fifty-seven million, three hundred ninety-four thousand, five hundred sixty-two".