18900376550 has 48 divisors (see below), whose sum is σ = 38702545200. Its totient is φ = 6809788800.

The previous prime is 18900376549. The next prime is 18900376553. The reversal of 18900376550 is 5567300981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18900376553) 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 23 ways as a sum of consecutive naturals, for example, 97685 + ... + 217584.

It is an arithmetic number, because the mean of its divisors is an integer number (806303025).

Almost surely, 2^18900376550 is an apocalyptic number.

18900376550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18900376550 is an abundant number, since it is smaller than the sum of its proper divisors (19802168650).

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

18900376550 is a wasteful number, since it uses less digits than its factorization.

18900376550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315401 (or 315396 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 18900376550 in words is "eighteen billion, nine hundred million, three hundred seventy-six thousand, five hundred fifty".