188199023 has 4 divisors (see below), whose sum is σ = 188268288. Its totient is φ = 188129760.

The previous prime is 188199019. The next prime is 188199029. The reversal of 188199023 is 320991881.

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 188199023 - 2² = 188199019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188199029) 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, 30383 + ... + 36048.

It is an arithmetic number, because the mean of its divisors is an integer number (47067072).

Almost surely, 2^188199023 is an apocalyptic number.

188199023 is a deficient number, since it is larger than the sum of its proper divisors (69265).

188199023 is an equidigital number, since it uses as much as digits as its factorization.

188199023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69264.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 188199023 is about 13718.5649030793. The cubic root of 188199023 is about 573.0675117182.

The spelling of 188199023 in words is "one hundred eighty-eight million, one hundred ninety-nine thousand, twenty-three".