191713738 has 4 divisors (see below), whose sum is σ = 287570610. Its totient is φ = 95856868.

The previous prime is 191713729. The next prime is 191713741. The reversal of 191713738 is 837317191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837317191 = 769 ⋅1088839.

It can be written as a sum of positive squares in only one way, i.e., 98069409 + 93644329 = 9903^2 + 9677^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 191713738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47928433 + ... + 47928436.

Almost surely, 2^191713738 is an apocalyptic number.

191713738 is a deficient number, since it is larger than the sum of its proper divisors (95856872).

191713738 is an equidigital number, since it uses as much as digits as its factorization.

191713738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95856871.

The product of its digits is 31752, while the sum is 40.

The square root of 191713738 is about 13846.0730172854. The cubic root of 191713738 is about 576.6129763164.

The spelling of 191713738 in words is "one hundred ninety-one million, seven hundred thirteen thousand, seven hundred thirty-eight".