190881633 has 8 divisors (see below), whose sum is σ = 254615200. Its totient is φ = 127201248.

The previous prime is 190881629. The next prime is 190881637. The reversal of 190881633 is 336188091.

190881633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (190881629) and next prime (190881637).

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

It is not a de Polignac number, because 190881633 - 2² = 190881629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190881591 and 190881600.

It is not an unprimeable number, because it can be changed into a prime (190881637) 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, 3988 + ... + 19941.

It is an arithmetic number, because the mean of its divisors is an integer number (31826900).

Almost surely, 2^190881633 is an apocalyptic number.

190881633 is the 7977-th octagonal number.

It is an amenable number.

190881633 is a deficient number, since it is larger than the sum of its proper divisors (63733567).

190881633 is a wasteful number, since it uses less digits than its factorization.

190881633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26591.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 190881633 is about 13815.9919296444. The cubic root of 190881633 is about 575.7775321190. Note that the first 3 decimals are identical.

The spelling of 190881633 in words is "one hundred ninety million, eight hundred eighty-one thousand, six hundred thirty-three".