18678954 has 32 divisors (see below), whose sum is σ = 45207936. Its totient is φ = 5022720.

The previous prime is 18678931. The next prime is 18678973. The reversal of 18678954 is 45987681.

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, 12367 + ... + 13794.

It is an arithmetic number, because the mean of its divisors is an integer number (1412748).

Almost surely, 2^18678954 is an apocalyptic number.

18678954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18678954 is an abundant number, since it is smaller than the sum of its proper divisors (26528982).

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

18678954 is a wasteful number, since it uses less digits than its factorization.

18678954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26190.

The product of its digits is 483840, while the sum is 48.

The square root of 18678954 is about 4321.9155475321. The cubic root of 18678954 is about 265.3286725246.

The spelling of 18678954 in words is "eighteen million, six hundred seventy-eight thousand, nine hundred fifty-four".