18845091936 has 480 divisors, whose sum is σ = 65204092800. Its totient is φ = 5277726720.

The previous prime is 18845091899. The next prime is 18845091989. The reversal of 18845091936 is 63919054881.

18845091936 is a `hidden beast` number, since 18 + 8 + 450 + 91 + 93 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 23293900 + ... + 23294708.

It is an arithmetic number, because the mean of its divisors is an integer number (135841860).

Almost surely, 2^18845091936 is an apocalyptic number.

18845091936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18845091936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32602046400).

18845091936 is an abundant number, since it is smaller than the sum of its proper divisors (46359000864).

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

18845091936 is a wasteful number, since it uses less digits than its factorization.

18845091936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 18845091936 in words is "eighteen billion, eight hundred forty-five million, ninety-one thousand, nine hundred thirty-six".