7873737889 has 2 divisors, whose sum is σ = 7873737890. Its totient is φ = 7873737888.

The previous prime is 7873737847. The next prime is 7873737919. The reversal of 7873737889 is 9887373787.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7496096400 + 377641489 = 86580^2 + 19433^2 .

It is a cyclic number.

It is not a de Polignac number, because 7873737889 - 2²⁵ = 7840183457 is a prime.

It is not a weakly prime, because it can be changed into another prime (7873737689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3936868944 + 3936868945.

It is an arithmetic number, because the mean of its divisors is an integer number (3936868945).

Almost surely, 2^7873737889 is an apocalyptic number.

It is an amenable number.

7873737889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7873737889 is an equidigital number, since it uses as much as digits as its factorization.

7873737889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99574272, while the sum is 67.

The square root of 7873737889 is about 88734.0852716700. The cubic root of 7873737889 is about 1989.4223123041.

The spelling of 7873737889 in words is "seven billion, eight hundred seventy-three million, seven hundred thirty-seven thousand, eight hundred eighty-nine".