189607997040 has 720 divisors, whose sum is σ = 756156352896. Its totient is φ = 39158676480.

The previous prime is 189607997039. The next prime is 189607997063. The reversal of 189607997040 is 40799706981.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 323011627 + ... + 323012213.

Almost surely, 2^189607997040 is an apocalyptic number.

189607997040 is a gapful number since it is divisible by the number (10) 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 189607997040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378078176448).

189607997040 is an abundant number, since it is smaller than the sum of its proper divisors (566548355856).

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

189607997040 is a wasteful number, since it uses less digits than its factorization.

189607997040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 60.

The spelling of 189607997040 in words is "one hundred eighty-nine billion, six hundred seven million, nine hundred ninety-seven thousand, forty".