7187013997 has 2 divisors, whose sum is σ = 7187013998. Its totient is φ = 7187013996.

The previous prime is 7187013949. The next prime is 7187014007. The reversal of 7187013997 is 7993107817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5160123556 + 2026890441 = 71834^2 + 45021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7187013997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7187013917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3593506998 + 3593506999.

It is an arithmetic number, because the mean of its divisors is an integer number (3593506999).

Almost surely, 2^7187013997 is an apocalyptic number.

It is an amenable number.

7187013997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7187013997 is an equidigital number, since it uses as much as digits as its factorization.

7187013997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 52.

The square root of 7187013997 is about 84776.2584512905. The cubic root of 7187013997 is about 1929.8171587104.

The spelling of 7187013997 in words is "seven billion, one hundred eighty-seven million, thirteen thousand, nine hundred ninety-seven".