18809948 has 12 divisors (see below), whose sum is σ = 32961600. Its totient is φ = 9392352.

The previous prime is 18809941. The next prime is 18809969. The reversal of 18809948 is 84990881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18809941) by changing a digit.

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, 728 + ... + 6176.

It is an arithmetic number, because the mean of its divisors is an integer number (2746800).

Almost surely, 2^18809948 is an apocalyptic number.

It is an amenable number.

18809948 is a deficient number, since it is larger than the sum of its proper divisors (14151652).

18809948 is a wasteful number, since it uses less digits than its factorization.

18809948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 18809948 is about 4337.0436935775. The cubic root of 18809948 is about 265.9474711131.

The spelling of 18809948 in words is "eighteen million, eight hundred nine thousand, nine hundred forty-eight".