1293539497 has 2 divisors, whose sum is σ = 1293539498. Its totient is φ = 1293539496.

The previous prime is 1293539491. The next prime is 1293539521. The reversal of 1293539497 is 7949353921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651474576 + 642064921 = 25524^2 + 25339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1293539497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1293539491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646769748 + 646769749.

It is an arithmetic number, because the mean of its divisors is an integer number (646769749).

Almost surely, 2^1293539497 is an apocalyptic number.

It is an amenable number.

1293539497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293539497 is an equidigital number, since it uses as much as digits as its factorization.

1293539497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 52.

The square root of 1293539497 is about 35965.8101118270. The cubic root of 1293539497 is about 1089.5819447225.

The spelling of 1293539497 in words is "one billion, two hundred ninety-three million, five hundred thirty-nine thousand, four hundred ninety-seven".