18064998 has 32 divisors (see below), whose sum is σ = 45880320. Its totient is φ = 5161320.

The previous prime is 18064973. The next prime is 18065023. The reversal of 18064998 is 89946081.

It is an interprime number because it is at equal distance from previous prime (18064973) and next prime (18065023).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23518 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (1433760).

Almost surely, 2^18064998 is an apocalyptic number.

18064998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18064998 is an abundant number, since it is smaller than the sum of its proper divisors (27815322).

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

18064998 is a wasteful number, since it uses less digits than its factorization.

18064998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47809 (or 47803 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 18064998 is about 4250.2938721928. The cubic root of 18064998 is about 262.3892103901.

The spelling of 18064998 in words is "eighteen million, sixty-four thousand, nine hundred ninety-eight".