188395149 has 4 divisors (see below), whose sum is σ = 251193536. Its totient is φ = 125596764.

The previous prime is 188395147. The next prime is 188395183. The reversal of 188395149 is 941593881.

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 188395149 - 2¹ = 188395147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188395098 and 188395107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188395147) 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, 31399189 + ... + 31399194.

It is an arithmetic number, because the mean of its divisors is an integer number (62798384).

Almost surely, 2^188395149 is an apocalyptic number.

It is an amenable number.

188395149 is a deficient number, since it is larger than the sum of its proper divisors (62798387).

188395149 is an equidigital number, since it uses as much as digits as its factorization.

188395149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62798386.

The product of its digits is 311040, while the sum is 48.

The square root of 188395149 is about 13725.7112384022. The cubic root of 188395149 is about 573.2665110136.

The spelling of 188395149 in words is "one hundred eighty-eight million, three hundred ninety-five thousand, one hundred forty-nine".