102191413 has 2 divisors, whose sum is σ = 102191414. Its totient is φ = 102191412.

The previous prime is 102191359. The next prime is 102191423. The reversal of 102191413 is 314191201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89245809 + 12945604 = 9447^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 102191413 - 2¹⁷ = 102060341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102191423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51095706 + 51095707.

It is an arithmetic number, because the mean of its divisors is an integer number (51095707).

Almost surely, 2^102191413 is an apocalyptic number.

It is an amenable number.

102191413 is a deficient number, since it is larger than the sum of its proper divisors (1).

102191413 is an equidigital number, since it uses as much as digits as its factorization.

102191413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 102191413 is about 10108.9768522833. The cubic root of 102191413 is about 467.5249596328.

The spelling of 102191413 in words is "one hundred two million, one hundred ninety-one thousand, four hundred thirteen".