190292891 has 4 divisors (see below), whose sum is σ = 190726800. Its totient is φ = 189858984.

The previous prime is 190292831. The next prime is 190292897. The reversal of 190292891 is 198292091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190292891 - 2¹⁰ = 190291867 is a prime.

It is a super-2 number, since 2×190292891² = 72422768730275762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190292897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216296 + ... + 217173.

It is an arithmetic number, because the mean of its divisors is an integer number (47681700).

Almost surely, 2^190292891 is an apocalyptic number.

190292891 is a deficient number, since it is larger than the sum of its proper divisors (433909).

190292891 is an equidigital number, since it uses as much as digits as its factorization.

190292891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433908.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 190292891 is about 13794.6689340484. The cubic root of 190292891 is about 575.1849597794.

The spelling of 190292891 in words is "one hundred ninety million, two hundred ninety-two thousand, eight hundred ninety-one".