18992612 has 6 divisors (see below), whose sum is σ = 33237078. Its totient is φ = 9496304.

The previous prime is 18992591. The next prime is 18992657. The reversal of 18992612 is 21629981.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 5494336 = 3674^2 + 2344^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2374073 + ... + 2374080.

It is an arithmetic number, because the mean of its divisors is an integer number (5539513).

Almost surely, 2^18992612 is an apocalyptic number.

It is an amenable number.

18992612 is a deficient number, since it is larger than the sum of its proper divisors (14244466).

18992612 is a wasteful number, since it uses less digits than its factorization.

18992612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748157 (or 4748155 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 18992612 is about 4358.0513994215. The cubic root of 18992612 is about 266.8055741579.

The spelling of 18992612 in words is "eighteen million, nine hundred ninety-two thousand, six hundred twelve".