192739213 has 2 divisors, whose sum is σ = 192739214. Its totient is φ = 192739212.

The previous prime is 192739189. The next prime is 192739219. The reversal of 192739213 is 312937291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146458404 + 46280809 = 12102^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 192739213 - 2⁵ = 192739181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192739219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96369606 + 96369607.

It is an arithmetic number, because the mean of its divisors is an integer number (96369607).

Almost surely, 2^192739213 is an apocalyptic number.

It is an amenable number.

192739213 is a deficient number, since it is larger than the sum of its proper divisors (1).

192739213 is an equidigital number, since it uses as much as digits as its factorization.

192739213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 192739213 is about 13883.0548871637. The cubic root of 192739213 is about 577.6392477944.

The spelling of 192739213 in words is "one hundred ninety-two million, seven hundred thirty-nine thousand, two hundred thirteen".