189874088857 has 8 divisors (see below), whose sum is σ = 195149091456. Its totient is φ = 184650550032.

The previous prime is 189874088839. The next prime is 189874088927. The reversal of 189874088857 is 758880478981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189874088857 is a prime.

It is a super-3 number, since 3×189874088857³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189874088857.

It is not an unprimeable number, because it can be changed into a prime (189874088827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12858463 + ... + 12873220.

It is an arithmetic number, because the mean of its divisors is an integer number (24393636432).

Almost surely, 2^189874088857 is an apocalyptic number.

It is an amenable number.

189874088857 is a deficient number, since it is larger than the sum of its proper divisors (5275002599).

189874088857 is a wasteful number, since it uses less digits than its factorization.

189874088857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25731887.

The product of its (nonzero) digits is 289013760, while the sum is 73.

The spelling of 189874088857 in words is "one hundred eighty-nine billion, eight hundred seventy-four million, eighty-eight thousand, eight hundred fifty-seven".