18963480 has 32 divisors (see below), whose sum is σ = 56890800. Its totient is φ = 5056896.

The previous prime is 18963421. The next prime is 18963487. The reversal of 18963480 is 8436981.

It is a super-2 number, since 2×18963480² = 719227147420800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18963487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78895 + ... + 79134.

Almost surely, 2^18963480 is an apocalyptic number.

18963480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18963480 is an abundant number, since it is smaller than the sum of its proper divisors (37927320).

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

18963480 is a wasteful number, since it uses less digits than its factorization.

18963480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158043 (or 158039 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18963480 is about 4354.7077973155. The cubic root of 18963480 is about 266.6690902558.

The spelling of 18963480 in words is "eighteen million, nine hundred sixty-three thousand, four hundred eighty".