18879435850 has 48 divisors (see below), whose sum is σ = 40561528896. Its totient is φ = 6461408000.

The previous prime is 18879435847. The next prime is 18879435853. The reversal of 18879435850 is 5853497881.

It is an interprime number because it is at equal distance from previous prime (18879435847) and next prime (18879435853).

It is not an unprimeable number, because it can be changed into a prime (18879435853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1000246 + ... + 1018945.

It is an arithmetic number, because the mean of its divisors is an integer number (845031852).

Almost surely, 2^18879435850 is an apocalyptic number.

18879435850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18879435850 is an abundant number, since it is smaller than the sum of its proper divisors (21682093046).

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

18879435850 is a wasteful number, since it uses less digits than its factorization.

18879435850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019231 (or 2019226 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 18879435850 in words is "eighteen billion, eight hundred seventy-nine million, four hundred thirty-five thousand, eight hundred fifty".