18610057 has 4 divisors (see below), whose sum is σ = 18628816. Its totient is φ = 18591300.

The previous prime is 18610051. The next prime is 18610061. The reversal of 18610057 is 75001681.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18610057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18610051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7803 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (4657204).

Almost surely, 2^18610057 is an apocalyptic number.

It is an amenable number.

18610057 is a deficient number, since it is larger than the sum of its proper divisors (18759).

18610057 is a wasteful number, since it uses less digits than its factorization.

18610057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18758.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 18610057 is about 4313.9375285231. The cubic root of 18610057 is about 265.0020505359.

The spelling of 18610057 in words is "eighteen million, six hundred ten thousand, fifty-seven".