18466290 has 48 divisors (see below), whose sum is σ = 50544000. Its totient is φ = 4664736.

The previous prime is 18466249. The next prime is 18466291. The reversal of 18466290 is 9266481.

It is not an unprimeable number, because it can be changed into a prime (18466291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3690 + ... + 7109.

It is an arithmetic number, because the mean of its divisors is an integer number (1053000).

Almost surely, 2^18466290 is an apocalyptic number.

18466290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18466290 is an abundant number, since it is smaller than the sum of its proper divisors (32077710).

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

18466290 is a wasteful number, since it uses less digits than its factorization.

18466290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10831 (or 10828 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 18466290 is about 4297.2421388607. The cubic root of 18466290 is about 264.3178849843.

The spelling of 18466290 in words is "eighteen million, four hundred sixty-six thousand, two hundred ninety".