7315493897 has 2 divisors, whose sum is σ = 7315493898. Its totient is φ = 7315493896.

The previous prime is 7315493821. The next prime is 7315493903. The reversal of 7315493897 is 7983945137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5119259401 + 2196234496 = 71549^2 + 46864^2 .

It is a cyclic number.

It is not a de Polignac number, because 7315493897 - 2¹⁴ = 7315477513 is a prime.

It is not a weakly prime, because it can be changed into another prime (7315493797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3657746948 + 3657746949.

It is an arithmetic number, because the mean of its divisors is an integer number (3657746949).

Almost surely, 2^7315493897 is an apocalyptic number.

It is an amenable number.

7315493897 is a deficient number, since it is larger than the sum of its proper divisors (1).

7315493897 is an equidigital number, since it uses as much as digits as its factorization.

7315493897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 56.

The square root of 7315493897 is about 85530.6605668400. The cubic root of 7315493897 is about 1941.2488767526.

The spelling of 7315493897 in words is "seven billion, three hundred fifteen million, four hundred ninety-three thousand, eight hundred ninety-seven".