18401948 has 12 divisors (see below), whose sum is σ = 32989152. Its totient is φ = 8976480.

The previous prime is 18401927. The next prime is 18401953. The reversal of 18401948 is 84910481.

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 3 ways as a sum of consecutive naturals, for example, 55940 + ... + 56267.

It is an arithmetic number, because the mean of its divisors is an integer number (2749096).

Almost surely, 2^18401948 is an apocalyptic number.

It is an amenable number.

18401948 is a deficient number, since it is larger than the sum of its proper divisors (14587204).

18401948 is a wasteful number, since it uses less digits than its factorization.

18401948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112252 (or 112250 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18401948 is about 4289.7491768168. The cubic root of 18401948 is about 264.0105405954.

The spelling of 18401948 in words is "eighteen million, four hundred one thousand, nine hundred forty-eight".