190181081992 has 32 divisors (see below), whose sum is σ = 389166822720. Its totient is φ = 86410376640.

The previous prime is 190181081929. The next prime is 190181082001. The reversal of 190181081992 is 299180181091.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228948 + ... + 657859.

It is an arithmetic number, because the mean of its divisors is an integer number (12161463210).

Almost surely, 2^190181081992 is an apocalyptic number.

It is an amenable number.

190181081992 is an abundant number, since it is smaller than the sum of its proper divisors (198985740728).

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

190181081992 is a wasteful number, since it uses less digits than its factorization.

190181081992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889261 (or 889257 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 49.

The spelling of 190181081992 in words is "one hundred ninety billion, one hundred eighty-one million, eighty-one thousand, nine hundred ninety-two".