189661582960 has 40 divisors (see below), whose sum is σ = 441237540240. Its totient is φ = 75817431552.

The previous prime is 189661582853. The next prime is 189661582967. The reversal of 189661582960 is 69285166981.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189661582967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608002 + ... + 865441.

It is an arithmetic number, because the mean of its divisors is an integer number (11030938506).

Almost surely, 2^189661582960 is an apocalyptic number.

189661582960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189661582960 is an abundant number, since it is smaller than the sum of its proper divisors (251575957280).

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

189661582960 is a wasteful number, since it uses less digits than its factorization.

189661582960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475065 (or 1475059 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 61.

The spelling of 189661582960 in words is "one hundred eighty-nine billion, six hundred sixty-one million, five hundred eighty-two thousand, nine hundred sixty".