18480858 has 16 divisors (see below), whose sum is σ = 40322016. Its totient is φ = 5600240.

The previous prime is 18480851. The next prime is 18480881. The reversal of 18480858 is 85808481.

It is a super-2 number, since 2×18480858² = 683084224832328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18480851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139941 + ... + 140072.

It is an arithmetic number, because the mean of its divisors is an integer number (2520126).

Almost surely, 2^18480858 is an apocalyptic number.

18480858 is an abundant number, since it is smaller than the sum of its proper divisors (21841158).

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

18480858 is a wasteful number, since it uses less digits than its factorization.

18480858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280029.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 18480858 is about 4298.9368453142. The cubic root of 18480858 is about 264.3873732396.

The spelling of 18480858 in words is "eighteen million, four hundred eighty thousand, eight hundred fifty-eight".