18850371850 has 48 divisors (see below), whose sum is σ = 35416405080. Its totient is φ = 7464038400.

The previous prime is 18850371821. The next prime is 18850371853. The reversal of 18850371850 is 5817305881.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 3890391129 + 14959980721 = 62373^2 + 122311^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18850371850.

It is not an unprimeable number, because it can be changed into a prime (18850371853) 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, 6038290 + ... + 6041410.

Almost surely, 2^18850371850 is an apocalyptic number.

18850371850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18850371850 is a deficient number, since it is larger than the sum of its proper divisors (16566033230).

18850371850 is a wasteful number, since it uses less digits than its factorization.

18850371850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315 (or 4310 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 46.

The spelling of 18850371850 in words is "eighteen billion, eight hundred fifty million, three hundred seventy-one thousand, eight hundred fifty".