190188901 has 4 divisors (see below), whose sum is σ = 217358752. Its totient is φ = 163019052.

The previous prime is 190188893. The next prime is 190188913. The reversal of 190188901 is 109881091.

It is a happy number.

190188901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 190188901 - 2³ = 190188893 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 (190188941) 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, 13584915 + ... + 13584928.

It is an arithmetic number, because the mean of its divisors is an integer number (54339688).

Almost surely, 2^190188901 is an apocalyptic number.

It is an amenable number.

190188901 is a deficient number, since it is larger than the sum of its proper divisors (27169851).

190188901 is an equidigital number, since it uses as much as digits as its factorization.

190188901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27169850.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 190188901 is about 13790.8992092612. The cubic root of 190188901 is about 575.0801662644.

The spelling of 190188901 in words is "one hundred ninety million, one hundred eighty-eight thousand, nine hundred one".