18364490 has 8 divisors (see below), whose sum is σ = 33056100. Its totient is φ = 7345792.

The previous prime is 18364487. The next prime is 18364513. The reversal of 18364490 is 9446381.

It can be written as a sum of positive squares in 2 ways, for example, as 17147881 + 1216609 = 4141^2 + 1103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18364490.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918215 + ... + 918234.

Almost surely, 2^18364490 is an apocalyptic number.

18364490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18364490 is a deficient number, since it is larger than the sum of its proper divisors (14691610).

18364490 is a wasteful number, since it uses less digits than its factorization.

18364490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836456.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18364490 is about 4285.3809632284. The cubic root of 18364490 is about 263.8312837676.

The spelling of 18364490 in words is "eighteen million, three hundred sixty-four thousand, four hundred ninety".