189658973480 has 16 divisors (see below), whose sum is σ = 426732690420. Its totient is φ = 75863589376.

The previous prime is 189658973473. The next prime is 189658973513. The reversal of 189658973480 is 84379856981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 184379207236 + 5279766244 = 429394^2 + 72662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189658973480.

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, 2370737129 + ... + 2370737208.

Almost surely, 2^189658973480 is an apocalyptic number.

189658973480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189658973480 is an abundant number, since it is smaller than the sum of its proper divisors (237073716940).

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

189658973480 is a wasteful number, since it uses less digits than its factorization.

189658973480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741474348 (or 4741474344 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 189658973480 in words is "one hundred eighty-nine billion, six hundred fifty-eight million, nine hundred seventy-three thousand, four hundred eighty".