1297201519 has 2 divisors, whose sum is σ = 1297201520. Its totient is φ = 1297201518.

The previous prime is 1297201487. The next prime is 1297201561. The reversal of 1297201519 is 9151027921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1297201519 - 2⁵ = 1297201487 is a prime.

It is a super-2 number, since 2×1297201519² = 3365463561791814722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297201579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648600759 + 648600760.

It is an arithmetic number, because the mean of its divisors is an integer number (648600760).

Almost surely, 2^1297201519 is an apocalyptic number.

1297201519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297201519 is an equidigital number, since it uses as much as digits as its factorization.

1297201519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 1297201519 is about 36016.6838978827. The cubic root of 1297201519 is about 1090.6091814018.

The spelling of 1297201519 in words is "one billion, two hundred ninety-seven million, two hundred one thousand, five hundred nineteen".