1319025899 has 2 divisors, whose sum is σ = 1319025900. Its totient is φ = 1319025898.

The previous prime is 1319025887. The next prime is 1319025901. The reversal of 1319025899 is 9985209131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319025899 is a prime.

It is a Sophie Germain prime.

Together with 1319025901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1319025199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659512949 + 659512950.

It is an arithmetic number, because the mean of its divisors is an integer number (659512950).

Almost surely, 2^1319025899 is an apocalyptic number.

1319025899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319025899 is an equidigital number, since it uses as much as digits as its factorization.

1319025899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 1319025899 is about 36318.3961512620. The cubic root of 1319025899 is about 1096.6914079449.

The spelling of 1319025899 in words is "one billion, three hundred nineteen million, twenty-five thousand, eight hundred ninety-nine".