190827561 has 8 divisors (see below), whose sum is σ = 254500704. Its totient is φ = 127186400.

The previous prime is 190827551. The next prime is 190827617. The reversal of 190827561 is 165728091.

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

It is a cyclic number.

It is not a de Polignac number, because 190827561 - 2⁷ = 190827433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190827521) 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, 18085 + ... + 26621.

It is an arithmetic number, because the mean of its divisors is an integer number (31812588).

Almost surely, 2^190827561 is an apocalyptic number.

It is an amenable number.

190827561 is a deficient number, since it is larger than the sum of its proper divisors (63673143).

190827561 is an equidigital number, since it uses as much as digits as its factorization.

190827561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15991.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 190827561 is about 13814.0349282894. The cubic root of 190827561 is about 575.7231591856.

The spelling of 190827561 in words is "one hundred ninety million, eight hundred twenty-seven thousand, five hundred sixty-one".