1295840497 has 4 divisors (see below), whose sum is σ = 1480960576. Its totient is φ = 1110720420.

The previous prime is 1295840479. The next prime is 1295840503. The reversal of 1295840497 is 7940485921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1295840497 - 2¹⁵ = 1295807729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1295840497.

It is not an unprimeable number, because it can be changed into a prime (1295840467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92560029 + ... + 92560042.

It is an arithmetic number, because the mean of its divisors is an integer number (370240144).

Almost surely, 2^1295840497 is an apocalyptic number.

It is an amenable number.

1295840497 is a deficient number, since it is larger than the sum of its proper divisors (185120079).

1295840497 is an equidigital number, since it uses as much as digits as its factorization.

1295840497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185120078.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1295840497 is about 35997.7846123897. The cubic root of 1295840497 is about 1090.2276260578.

The spelling of 1295840497 in words is "one billion, two hundred ninety-five million, eight hundred forty thousand, four hundred ninety-seven".