189789650680 has 32 divisors (see below), whose sum is σ = 488030531040. Its totient is φ = 65070737280.

The previous prime is 189789650657. The next prime is 189789650693. The reversal of 189789650680 is 86056987981.

It is a super-2 number, since 2×189789650680² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338909811 + ... + 338910370.

It is an arithmetic number, because the mean of its divisors is an integer number (15250954095).

Almost surely, 2^189789650680 is an apocalyptic number.

189789650680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189789650680 is an abundant number, since it is smaller than the sum of its proper divisors (298240880360).

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

189789650680 is a wasteful number, since it uses less digits than its factorization.

189789650680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677820199 (or 677820195 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 189789650680 in words is "one hundred eighty-nine billion, seven hundred eighty-nine million, six hundred fifty thousand, six hundred eighty".