718951401491 has 2 divisors, whose sum is σ = 718951401492. Its totient is φ = 718951401490.

The previous prime is 718951401403. The next prime is 718951401523. The reversal of 718951401491 is 194104159817.

718951401491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718951401491 is a prime.

It is a super-2 number, since 2×718951401491² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (718951401401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359475700745 + 359475700746.

It is an arithmetic number, because the mean of its divisors is an integer number (359475700746).

Almost surely, 2^718951401491 is an apocalyptic number.

718951401491 is a deficient number, since it is larger than the sum of its proper divisors (1).

718951401491 is an equidigital number, since it uses as much as digits as its factorization.

718951401491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 718951401491 in words is "seven hundred eighteen billion, nine hundred fifty-one million, four hundred one thousand, four hundred ninety-one".