18484290 has 48 divisors (see below), whose sum is σ = 52430976. Its totient is φ = 4480800.

The previous prime is 18484273. The next prime is 18484307. The reversal of 18484290 is 9248481.

It is an interprime number because it is at equal distance from previous prime (18484273) and next prime (18484307).

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, 8346 + ... + 10325.

It is an arithmetic number, because the mean of its divisors is an integer number (1092312).

Almost surely, 2^18484290 is an apocalyptic number.

18484290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18484290 is an abundant number, since it is smaller than the sum of its proper divisors (33946686).

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

18484290 is a wasteful number, since it uses less digits than its factorization.

18484290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18695 (or 18692 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 18484290 is about 4299.3359952439. The cubic root of 18484290 is about 264.4037383041.

The spelling of 18484290 in words is "eighteen million, four hundred eighty-four thousand, two hundred ninety".