191425194 has 28 divisors (see below), whose sum is σ = 430513026. Its totient is φ = 63807912.

The previous prime is 191425189. The next prime is 191425243. The reversal of 191425194 is 491524191.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 127983969 + 63441225 = 11313^2 + 7965^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 64189 + ... + 67104.

Almost surely, 2^191425194 is an apocalyptic number.

191425194 is an abundant number, since it is smaller than the sum of its proper divisors (239087832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191425194 is an equidigital number, since it uses as much as digits as its factorization.

191425194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131313 (or 131298 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 191425194 is about 13835.6493884458. The cubic root of 191425194 is about 576.3235486921.

It can be divided in two parts, 19142 and 5194, that added together give a square (24336 = 156²).

The spelling of 191425194 in words is "one hundred ninety-one million, four hundred twenty-five thousand, one hundred ninety-four".