189268506985470 has 96 divisors (see below), whose sum is σ = 503224895545344. Its totient is φ = 45521988684480.

The previous prime is 189268506985451. The next prime is 189268506985513. The reversal of 189268506985470 is 74589605862981.

It is a super-2 number, since 2×189268506985470² (a number of 29 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 47 ways as a sum of consecutive naturals, for example, 204814914 + ... + 205736933.

It is an arithmetic number, because the mean of its divisors is an integer number (5241925995264).

Almost surely, 2^{189268506985470} is an apocalyptic number.

189268506985470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189268506985470 is an abundant number, since it is smaller than the sum of its proper divisors (313956388559874).

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

189268506985470 is a wasteful number, since it uses less digits than its factorization.

189268506985470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410552006 (or 410551995 counting only the distinct ones).

The product of its (nonzero) digits is 2090188800, while the sum is 78.

The spelling of 189268506985470 in words is "one hundred eighty-nine trillion, two hundred sixty-eight billion, five hundred six million, nine hundred eighty-five thousand, four hundred seventy".