18180954 has 24 divisors (see below), whose sum is σ = 42973632. Its totient is φ = 5509320.

The previous prime is 18180937. The next prime is 18180979. The reversal of 18180954 is 45908181.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45714 + ... + 46109.

It is an arithmetic number, because the mean of its divisors is an integer number (1790568).

Almost surely, 2^18180954 is an apocalyptic number.

18180954 is an abundant number, since it is smaller than the sum of its proper divisors (24792678).

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

18180954 is a wasteful number, since it uses less digits than its factorization.

18180954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91842 (or 91839 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 18180954 is about 4263.9129916076. The cubic root of 18180954 is about 262.9494233056.

The spelling of 18180954 in words is "eighteen million, one hundred eighty thousand, nine hundred fifty-four".