18500058 has 24 divisors (see below), whose sum is σ = 40281696. Its totient is φ = 6136200.

The previous prime is 18500051. The next prime is 18500071. The reversal of 18500058 is 85000581.

It is not an unprimeable number, because it can be changed into a prime (18500051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1363 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (1678404).

Almost surely, 2^18500058 is an apocalyptic number.

18500058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18500058 is an abundant number, since it is smaller than the sum of its proper divisors (21781638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18500058 is a wasteful number, since it uses less digits than its factorization.

18500058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090 (or 5087 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 18500058 is about 4301.1693758791. The cubic root of 18500058 is about 264.4789000265.

The spelling of 18500058 in words is "eighteen million, five hundred thousand, fifty-eight".