189699077001980 has 96 divisors (see below), whose sum is σ = 506115254722560. Its totient is φ = 58099965431040.

The previous prime is 189699077001871. The next prime is 189699077001989. The reversal of 189699077001980 is 89100770996981.

It is a junction number, because it is equal to n+sod(n) for n = 189699077001898 and 189699077001907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189699077001989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1681076840 + ... + 1681189679.

It is an arithmetic number, because the mean of its divisors is an integer number (5272033903360).

Almost surely, 2^{189699077001980} is an apocalyptic number.

189699077001980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189699077001980 is an abundant number, since it is smaller than the sum of its proper divisors (316416177720580).

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

189699077001980 is a wasteful number, since it uses less digits than its factorization.

189699077001980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362266579 (or 3362266577 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 74.

The spelling of 189699077001980 in words is "one hundred eighty-nine trillion, six hundred ninety-nine billion, seventy-seven million, one thousand, nine hundred eighty".