18375138354850 has 24 divisors (see below), whose sum is σ = 34972588910160. Its totient is φ = 7179123821520.

The previous prime is 18375138354823. The next prime is 18375138354851. The reversal of 18375138354850 is 5845383157381.

It is not an unprimeable number, because it can be changed into a prime (18375138354851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4273285840 + ... + 4273290139.

It is an arithmetic number, because the mean of its divisors is an integer number (1457191204590).

Almost surely, 2^{18375138354850} is an apocalyptic number.

18375138354850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18375138354850 is a deficient number, since it is larger than the sum of its proper divisors (16597450555310).

18375138354850 is a wasteful number, since it uses less digits than its factorization.

18375138354850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546576034 (or 8546576029 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 61.

The spelling of 18375138354850 in words is "eighteen trillion, three hundred seventy-five billion, one hundred thirty-eight million, three hundred fifty-four thousand, eight hundred fifty".