18461946 has 8 divisors (see below), whose sum is σ = 36923904. Its totient is φ = 6153980.

The previous prime is 18461941. The next prime is 18461953. The reversal of 18461946 is 64916481.

It is a sphenic number, since it is the product of 3 distinct primes.

18461946 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18461941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1538490 + ... + 1538501.

It is an arithmetic number, because the mean of its divisors is an integer number (4615488).

Almost surely, 2^18461946 is an apocalyptic number.

18461946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18461946 is a wasteful number, since it uses less digits than its factorization.

18461946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076996.

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

The square root of 18461946 is about 4296.7366686824. The cubic root of 18461946 is about 264.2971573605.

The spelling of 18461946 in words is "eighteen million, four hundred sixty-one thousand, nine hundred forty-six".