189760881 has 8 divisors (see below), whose sum is σ = 254326240. Its totient is φ = 125851392.

The previous prime is 189760873. The next prime is 189760927. The reversal of 189760881 is 188067981.

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

It is not a de Polignac number, because 189760881 - 2³ = 189760873 is a prime.

It is a super-2 number, since 2×189760881² = 72018383915792322, which contains 22 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 189760881.

It is not an unprimeable number, because it can be changed into a prime (189760801) 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, 163291 + ... + 164448.

It is an arithmetic number, because the mean of its divisors is an integer number (31790780).

Almost surely, 2^189760881 is an apocalyptic number.

It is an amenable number.

189760881 is a deficient number, since it is larger than the sum of its proper divisors (64565359).

189760881 is a wasteful number, since it uses less digits than its factorization.

189760881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327935.

The product of its (nonzero) digits is 193536, while the sum is 48.

The square root of 189760881 is about 13775.3722635724. The cubic root of 189760881 is about 574.6484363843.

The spelling of 189760881 in words is "one hundred eighty-nine million, seven hundred sixty thousand, eight hundred eighty-one".