7164731491 has 2 divisors, whose sum is σ = 7164731492. Its totient is φ = 7164731490.

The previous prime is 7164731479. The next prime is 7164731513. The reversal of 7164731491 is 1941374617.

7164731491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7164731491 - 2⁵ = 7164731459 is a prime.

It is not a weakly prime, because it can be changed into another prime (7164731461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3582365745 + 3582365746.

It is an arithmetic number, because the mean of its divisors is an integer number (3582365746).

Almost surely, 2^7164731491 is an apocalyptic number.

7164731491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7164731491 is an equidigital number, since it uses as much as digits as its factorization.

7164731491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 7164731491 is about 84644.7369362089. The cubic root of 7164731491 is about 1927.8207023618.

The spelling of 7164731491 in words is "seven billion, one hundred sixty-four million, seven hundred thirty-one thousand, four hundred ninety-one".