190939387 has 4 divisors (see below), whose sum is σ = 190970416. Its totient is φ = 190908360.

The previous prime is 190939367. The next prime is 190939391. The reversal of 190939387 is 783939091.

190939387 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.

It is a cyclic number.

It is not a de Polignac number, because 190939387 - 2²⁷ = 56721659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190939387.

It is not an unprimeable number, because it can be changed into a prime (190939367) 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, 2823 + ... + 19744.

It is an arithmetic number, because the mean of its divisors is an integer number (47742604).

Almost surely, 2^190939387 is an apocalyptic number.

190939387 is a deficient number, since it is larger than the sum of its proper divisors (31029).

190939387 is an equidigital number, since it uses as much as digits as its factorization.

190939387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31028.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 190939387 is about 13818.0818857032. The cubic root of 190939387 is about 575.8355962045.

The spelling of 190939387 in words is "one hundred ninety million, nine hundred thirty-nine thousand, three hundred eighty-seven".