117156493 has 2 divisors, whose sum is σ = 117156494. Its totient is φ = 117156492.

The previous prime is 117156449. The next prime is 117156497. The reversal of 117156493 is 394651711.

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., 73239364 + 43917129 = 8558^2 + 6627^2 .

It is a cyclic number.

It is not a de Polignac number, because 117156493 - 2⁹ = 117155981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117156497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58578246 + 58578247.

It is an arithmetic number, because the mean of its divisors is an integer number (58578247).

Almost surely, 2^117156493 is an apocalyptic number.

It is an amenable number.

117156493 is a deficient number, since it is larger than the sum of its proper divisors (1).

117156493 is an equidigital number, since it uses as much as digits as its factorization.

117156493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 117156493 is about 10823.8853005748. The cubic root of 117156493 is about 489.3152910541.

It can be divided in two parts, 117156 and 493, that added together give a 6-th power (117649 = 7⁶).

The spelling of 117156493 in words is "one hundred seventeen million, one hundred fifty-six thousand, four hundred ninety-three".