1497696509 has 2 divisors, whose sum is σ = 1497696510. Its totient is φ = 1497696508.

The previous prime is 1497696479. The next prime is 1497696517. The reversal of 1497696509 is 9056967941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197367609 + 300328900 = 34603^2 + 17330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497696509 - 2⁸ = 1497696253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1497696569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748848254 + 748848255.

It is an arithmetic number, because the mean of its divisors is an integer number (748848255).

Almost surely, 2^1497696509 is an apocalyptic number.

It is an amenable number.

1497696509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497696509 is an equidigital number, since it uses as much as digits as its factorization.

1497696509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 1497696509 is about 38700.0840955159. The cubic root of 1497696509 is about 1144.1279781375.

The spelling of 1497696509 in words is "one billion, four hundred ninety-seven million, six hundred ninety-six thousand, five hundred nine".