2157924406 has 12 divisors (see below), whose sum is σ = 3557900556. Its totient is φ = 980874620.

The previous prime is 2157924383. The next prime is 2157924443. The reversal of 2157924406 is 6044297512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4458280 + ... + 4458763.

It is an arithmetic number, because the mean of its divisors is an integer number (296491713).

Almost surely, 2^2157924406 is an apocalyptic number.

2157924406 is a deficient number, since it is larger than the sum of its proper divisors (1399976150).

2157924406 is a wasteful number, since it uses less digits than its factorization.

2157924406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917067 (or 8917056 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2157924406 is about 46453.4649514974. The cubic root of 2157924406 is about 1292.2466320922.

The spelling of 2157924406 in words is "two billion, one hundred fifty-seven million, nine hundred twenty-four thousand, four hundred six".