189897500480 has 28 divisors (see below), whose sum is σ = 452193423780. Its totient is φ = 75959000064.

The previous prime is 189897500467. The next prime is 189897500521. The reversal of 189897500480 is 84005798981.

It can be written as a sum of positive squares in 2 ways, for example, as 104675543296 + 85221957184 = 323536^2 + 291928^2 .

It is a super-2 number, since 2×189897500480² (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 3 ways as a sum of consecutive naturals, for example, 296714525 + ... + 296715164.

It is an arithmetic number, because the mean of its divisors is an integer number (16149765135).

Almost surely, 2^189897500480 is an apocalyptic number.

189897500480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189897500480 is an abundant number, since it is smaller than the sum of its proper divisors (262295923300).

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

189897500480 is an equidigital number, since it uses as much as digits as its factorization.

189897500480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593429706 (or 593429696 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 189897500480 in words is "one hundred eighty-nine billion, eight hundred ninety-seven million, five hundred thousand, four hundred eighty".