19319129 has 2 divisors, whose sum is σ = 19319130. Its totient is φ = 19319128.

The previous prime is 19319117. The next prime is 19319173. The reversal of 19319129 is 92191391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15784729 + 3534400 = 3973^2 + 1880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19319129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19319929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9659564 + 9659565.

It is an arithmetic number, because the mean of its divisors is an integer number (9659565).

Almost surely, 2^19319129 is an apocalyptic number.

It is an amenable number.

19319129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19319129 is an equidigital number, since it uses as much as digits as its factorization.

19319129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 35.

The square root of 19319129 is about 4395.3531143698. The cubic root of 19319129 is about 268.3258502172.

The spelling of 19319129 in words is "nineteen million, three hundred nineteen thousand, one hundred twenty-nine".