18312374850 has 384 divisors, whose sum is σ = 59048220672. Its totient is φ = 3645388800.

The previous prime is 18312374831. The next prime is 18312374863. The reversal of 18312374850 is 5847321381.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 31196257 + ... + 31196843.

It is an arithmetic number, because the mean of its divisors is an integer number (153771408).

Almost surely, 2^18312374850 is an apocalyptic number.

18312374850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18312374850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29524110336).

18312374850 is an abundant number, since it is smaller than the sum of its proper divisors (40735845822).

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

18312374850 is a wasteful number, since it uses less digits than its factorization.

18312374850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 18312374850 in words is "eighteen billion, three hundred twelve million, three hundred seventy-four thousand, eight hundred fifty".