20844189594 has 48 divisors (see below), whose sum is σ = 46857152160. Its totient is φ = 6944790960.

The previous prime is 20844189589. The next prime is 20844189601. The reversal of 20844189594 is 49598144802.

It is a happy number.

20844189594 is a `hidden beast` number, since 2 + 0 + 8 + 4 + 41 + 8 + 9 + 594 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20844189594.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1162852 + ... + 1180640.

It is an arithmetic number, because the mean of its divisors is an integer number (976190670).

Almost surely, 2^20844189594 is an apocalyptic number.

20844189594 is an abundant number, since it is smaller than the sum of its proper divisors (26012962566).

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

20844189594 is a wasteful number, since it uses less digits than its factorization.

20844189594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20217 (or 20205 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 20844189594 in words is "twenty billion, eight hundred forty-four million, one hundred eighty-nine thousand, five hundred ninety-four".