18798948 has 54 divisors (see below), whose sum is σ = 55283046. Its totient is φ = 5370624.

The previous prime is 18798943. The next prime is 18798971. The reversal of 18798948 is 84989781.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 7225344 = 3402^2 + 2688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18798894 and 18798903.

It is not an unprimeable number, because it can be changed into a prime (18798943) 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 17 ways as a sum of consecutive naturals, for example, 3565 + ... + 7092.

Almost surely, 2^18798948 is an apocalyptic number.

18798948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18798948 is an abundant number, since it is smaller than the sum of its proper divisors (36484098).

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

18798948 is a wasteful number, since it uses less digits than its factorization.

18798948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10681 (or 10669 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 18798948 is about 4335.7753631848. The cubic root of 18798948 is about 265.8956192486.

The spelling of 18798948 in words is "eighteen million, seven hundred ninety-eight thousand, nine hundred forty-eight".