1497868397 has 2 divisors, whose sum is σ = 1497868398. Its totient is φ = 1497868396.

The previous prime is 1497868369. The next prime is 1497868417. The reversal of 1497868397 is 7938687941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896343721 + 601524676 = 29939^2 + 24526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497868397 - 2¹⁰ = 1497867373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1497868297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748934198 + 748934199.

It is an arithmetic number, because the mean of its divisors is an integer number (748934199).

Almost surely, 2^1497868397 is an apocalyptic number.

It is an amenable number.

1497868397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497868397 is an equidigital number, since it uses as much as digits as its factorization.

1497868397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 62.

The square root of 1497868397 is about 38702.3048021691. The cubic root of 1497868397 is about 1144.1717463165.

The spelling of 1497868397 in words is "one billion, four hundred ninety-seven million, eight hundred sixty-eight thousand, three hundred ninety-seven".