1295783497 has 2 divisors, whose sum is σ = 1295783498. Its totient is φ = 1295783496.

The previous prime is 1295783483. The next prime is 1295783501. The reversal of 1295783497 is 7943875921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251107641 + 44675856 = 35371^2 + 6684^2 .

It is an emirp because it is prime and its reverse (7943875921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1295783497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1295787497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647891748 + 647891749.

It is an arithmetic number, because the mean of its divisors is an integer number (647891749).

Almost surely, 2^1295783497 is an apocalyptic number.

It is an amenable number.

1295783497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295783497 is an equidigital number, since it uses as much as digits as its factorization.

1295783497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 55.

The square root of 1295783497 is about 35996.9928882955. The cubic root of 1295783497 is about 1090.2116405806.

The spelling of 1295783497 in words is "one billion, two hundred ninety-five million, seven hundred eighty-three thousand, four hundred ninety-seven".