18860058 has 72 divisors (see below), whose sum is σ = 48610848. Its totient is φ = 5174064.

The previous prime is 18860057. The next prime is 18860081. The reversal of 18860058 is 85006881.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18860057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 319633 + ... + 319691.

Almost surely, 2^18860058 is an apocalyptic number.

18860058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18860058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24305424).

18860058 is an abundant number, since it is smaller than the sum of its proper divisors (29750790).

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

18860058 is a wasteful number, since it uses less digits than its factorization.

18860058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 18860058 is about 4342.8168278204. The cubic root of 18860058 is about 266.1834244704.

The spelling of 18860058 in words is "eighteen million, eight hundred sixty thousand, fifty-eight".