18948033580 has 24 divisors (see below), whose sum is σ = 45475280928. Its totient is φ = 6496468608.

The previous prime is 18948033547. The next prime is 18948033607. The reversal of 18948033580 is 8533084981.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 67671409 + ... + 67671688.

It is an arithmetic number, because the mean of its divisors is an integer number (1894803372).

Almost surely, 2^18948033580 is an apocalyptic number.

18948033580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18948033580 is an abundant number, since it is smaller than the sum of its proper divisors (26527247348).

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

18948033580 is a wasteful number, since it uses less digits than its factorization.

18948033580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135343113 (or 135343111 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 18948033580 in words is "eighteen billion, nine hundred forty-eight million, thirty-three thousand, five hundred eighty".