7897023737 has 2 divisors, whose sum is σ = 7897023738. Its totient is φ = 7897023736.

The previous prime is 7897023679. The next prime is 7897023749. The reversal of 7897023737 is 7373207987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6769340176 + 1127683561 = 82276^2 + 33581^2 .

It is an emirp because it is prime and its reverse (7373207987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7897023737 - 2¹⁴ = 7897007353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7897023767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948511868 + 3948511869.

It is an arithmetic number, because the mean of its divisors is an integer number (3948511869).

Almost surely, 2^7897023737 is an apocalyptic number.

It is an amenable number.

7897023737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897023737 is an equidigital number, since it uses as much as digits as its factorization.

7897023737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3111696, while the sum is 53.

The square root of 7897023737 is about 88865.1998084740. The cubic root of 7897023737 is about 1991.3815593366.

The spelling of 7897023737 in words is "seven billion, eight hundred ninety-seven million, twenty-three thousand, seven hundred thirty-seven".