189837361896 has 128 divisors (see below), whose sum is σ = 587699589120. Its totient is φ = 49759743744.

The previous prime is 189837361853. The next prime is 189837361927. The reversal of 189837361896 is 698163738981.

It is a self number, because there is not a number n which added to its sum of digits gives 189837361896.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89361 + ... + 622623.

It is an arithmetic number, because the mean of its divisors is an integer number (4591403040).

Almost surely, 2^189837361896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189837361896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293849794560).

189837361896 is an abundant number, since it is smaller than the sum of its proper divisors (397862227224).

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

189837361896 is a wasteful number, since it uses less digits than its factorization.

189837361896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533455 (or 533451 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 69.

The spelling of 189837361896 in words is "one hundred eighty-nine billion, eight hundred thirty-seven million, three hundred sixty-one thousand, eight hundred ninety-six".