18935439048 has 48 divisors (see below), whose sum is σ = 51986008620. Its totient is φ = 6225348096.

The previous prime is 18935439023. The next prime is 18935439049. The reversal of 18935439048 is 84093453981.

18935439048 is a `hidden beast` number, since 1 + 8 + 9 + 3 + 543 + 90 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17875155204 + 1060283844 = 133698^2 + 32562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18935438985 and 18935439003.

It is not an unprimeable number, because it can be changed into a prime (18935439049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796061 + ... + 1806572.

Almost surely, 2^18935439048 is an apocalyptic number.

18935439048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18935439048 is an abundant number, since it is smaller than the sum of its proper divisors (33050569572).

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

18935439048 is a wasteful number, since it uses less digits than its factorization.

18935439048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602718 (or 3602711 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 18935439048 in words is "eighteen billion, nine hundred thirty-five million, four hundred thirty-nine thousand, forty-eight".