18922137 has 16 divisors (see below), whose sum is σ = 27292608. Its totient is φ = 11592000.

The previous prime is 18922129. The next prime is 18922151. The reversal of 18922137 is 73122981.

It is not a de Polignac number, because 18922137 - 2³ = 18922129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18922098 and 18922107.

It is not an unprimeable number, because it can be changed into a prime (18922177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8823 + ... + 10755.

It is an arithmetic number, because the mean of its divisors is an integer number (1705788).

Almost surely, 2^18922137 is an apocalyptic number.

It is an amenable number.

18922137 is a deficient number, since it is larger than the sum of its proper divisors (8370471).

18922137 is a wasteful number, since it uses less digits than its factorization.

18922137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its digits is 6048, while the sum is 33.

The square root of 18922137 is about 4349.9582756620. The cubic root of 18922137 is about 266.4751574640.

The spelling of 18922137 in words is "eighteen million, nine hundred twenty-two thousand, one hundred thirty-seven".