1177311493 has 2 divisors, whose sum is σ = 1177311494. Its totient is φ = 1177311492.

The previous prime is 1177311479. The next prime is 1177311503. The reversal of 1177311493 is 3941137711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164652129 + 12659364 = 34127^2 + 3558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1177311493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1177311293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 588655746 + 588655747.

It is an arithmetic number, because the mean of its divisors is an integer number (588655747).

Almost surely, 2^1177311493 is an apocalyptic number.

It is an amenable number.

1177311493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1177311493 is an equidigital number, since it uses as much as digits as its factorization.

1177311493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 1177311493 is about 34311.9730269188. The cubic root of 1177311493 is about 1055.9186514877.

The spelling of 1177311493 in words is "one billion, one hundred seventy-seven million, three hundred eleven thousand, four hundred ninety-three".