189791769 has 4 divisors (see below), whose sum is σ = 253055696. Its totient is φ = 126527844.

The previous prime is 189791753. The next prime is 189791783. The reversal of 189791769 is 967197981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 189791769 - 2⁴ = 189791753 is a prime.

It is a super-2 number, since 2×189791769² = 72041831160298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189791729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31631959 + ... + 31631964.

It is an arithmetic number, because the mean of its divisors is an integer number (63263924).

Almost surely, 2^189791769 is an apocalyptic number.

It is an amenable number.

189791769 is a deficient number, since it is larger than the sum of its proper divisors (63263927).

189791769 is an equidigital number, since it uses as much as digits as its factorization.

189791769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63263926.

The product of its digits is 1714608, while the sum is 57.

The square root of 189791769 is about 13776.4933491800. The cubic root of 189791769 is about 574.6796138287.

The spelling of 189791769 in words is "one hundred eighty-nine million, seven hundred ninety-one thousand, seven hundred sixty-nine".