192721349 has 2 divisors, whose sum is σ = 192721350. Its totient is φ = 192721348.

The previous prime is 192721337. The next prime is 192721363. The reversal of 192721349 is 943127291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125776225 + 66945124 = 11215^2 + 8182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-192721349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192721649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96360674 + 96360675.

It is an arithmetic number, because the mean of its divisors is an integer number (96360675).

Almost surely, 2^192721349 is an apocalyptic number.

It is an amenable number.

192721349 is a deficient number, since it is larger than the sum of its proper divisors (1).

192721349 is an equidigital number, since it uses as much as digits as its factorization.

192721349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 192721349 is about 13882.4114980071. The cubic root of 192721349 is about 577.6214011124.

The spelling of 192721349 in words is "one hundred ninety-two million, seven hundred twenty-one thousand, three hundred forty-nine".