18458082 has 48 divisors (see below), whose sum is σ = 43480320. Its totient is φ = 5637600.

The previous prime is 18458071. The next prime is 18458093. The reversal of 18458082 is 28085481.

It is an interprime number because it is at equal distance from previous prime (18458071) and next prime (18458093).

It is a super-2 number, since 2×18458082² = 681401582237448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9732 + ... + 11472.

It is an arithmetic number, because the mean of its divisors is an integer number (905840).

Almost surely, 2^18458082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18458082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21740160).

18458082 is an abundant number, since it is smaller than the sum of its proper divisors (25022238).

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

18458082 is a wasteful number, since it uses less digits than its factorization.

18458082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18458082 is about 4296.2870015864. The cubic root of 18458082 is about 264.2787173493.

The spelling of 18458082 in words is "eighteen million, four hundred fifty-eight thousand, eighty-two".