18163480 has 32 divisors (see below), whose sum is σ = 43273440. Its totient is φ = 6837760.

The previous prime is 18163469. The next prime is 18163493. The reversal of 18163480 is 8436181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12676 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (1352295).

Almost surely, 2^18163480 is an apocalyptic number.

18163480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18163480 is an abundant number, since it is smaller than the sum of its proper divisors (25109960).

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

18163480 is a wasteful number, since it uses less digits than its factorization.

18163480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26739 (or 26735 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18163480 is about 4261.8634422046. The cubic root of 18163480 is about 262.8651546977.

The spelling of 18163480 in words is "eighteen million, one hundred sixty-three thousand, four hundred eighty".