1295917919 has 2 divisors, whose sum is σ = 1295917920. Its totient is φ = 1295917918.

The previous prime is 1295917897. The next prime is 1295917921. The reversal of 1295917919 is 9197195921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1295917919 - 2⁸ = 1295917663 is a prime.

It is a super-2 number, since 2×1295917919² = 3358806505570581122, which contains 22 as substring.

Together with 1295917921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1295917019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647958959 + 647958960.

It is an arithmetic number, because the mean of its divisors is an integer number (647958960).

Almost surely, 2^1295917919 is an apocalyptic number.

1295917919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295917919 is an equidigital number, since it uses as much as digits as its factorization.

1295917919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 53.

The square root of 1295917919 is about 35998.8599680601. The cubic root of 1295917919 is about 1090.2493380721.

The spelling of 1295917919 in words is "one billion, two hundred ninety-five million, nine hundred seventeen thousand, nine hundred nineteen".