18648948 has 24 divisors (see below), whose sum is σ = 43690752. Its totient is φ = 6191104.

The previous prime is 18648947. The next prime is 18648961. The reversal of 18648948 is 84984681.

It is a junction number, because it is equal to n+sod(n) for n = 18648897 and 18648906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18648941) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61 + ... + 6107.

It is an arithmetic number, because the mean of its divisors is an integer number (1820448).

Almost surely, 2^18648948 is an apocalyptic number.

It is an amenable number.

18648948 is an abundant number, since it is smaller than the sum of its proper divisors (25041804).

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

18648948 is a wasteful number, since it uses less digits than its factorization.

18648948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311 (or 6309 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 18648948 is about 4318.4427748900. The cubic root of 18648948 is about 265.1865211124.

The spelling of 18648948 in words is "eighteen million, six hundred forty-eight thousand, nine hundred forty-eight".