18461976 has 64 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 5555328.

The previous prime is 18461969. The next prime is 18461987. The reversal of 18461976 is 67916481.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14035 + ... + 15293.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^18461976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18461976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25401600).

18461976 is an abundant number, since it is smaller than the sum of its proper divisors (32341224).

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

18461976 is a wasteful number, since it uses less digits than its factorization.

18461976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1324 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 18461976 is about 4296.7401597025. The cubic root of 18461976 is about 264.2973005182.

The spelling of 18461976 in words is "eighteen million, four hundred sixty-one thousand, nine hundred seventy-six".