18850972650 has 24 divisors (see below), whose sum is σ = 46750412544. Its totient is φ = 5026926000.

The previous prime is 18850972633. The next prime is 18850972663. The reversal of 18850972650 is 5627905881.

It is a junction number, because it is equal to n+sod(n) for n = 18850972593 and 18850972602.

It is an unprimeable number.

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, 62836426 + ... + 62836725.

It is an arithmetic number, because the mean of its divisors is an integer number (1947933856).

Almost surely, 2^18850972650 is an apocalyptic number.

18850972650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18850972650 is an abundant number, since it is smaller than the sum of its proper divisors (27899439894).

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

18850972650 is a wasteful number, since it uses less digits than its factorization.

18850972650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125673166 (or 125673161 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 18850972650 in words is "eighteen billion, eight hundred fifty million, nine hundred seventy-two thousand, six hundred fifty".