117981673 has 2 divisors, whose sum is σ = 117981674. Its totient is φ = 117981672.

The previous prime is 117981631. The next prime is 117981701. The reversal of 117981673 is 376189711.

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., 59413264 + 58568409 = 7708^2 + 7653^2 .

It is a cyclic number.

It is not a de Polignac number, because 117981673 - 2⁹ = 117981161 is a prime.

It is not a weakly prime, because it can be changed into another prime (117981373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58990836 + 58990837.

It is an arithmetic number, because the mean of its divisors is an integer number (58990837).

Almost surely, 2^117981673 is an apocalyptic number.

It is an amenable number.

117981673 is a deficient number, since it is larger than the sum of its proper divisors (1).

117981673 is an equidigital number, since it uses as much as digits as its factorization.

117981673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 43.

The square root of 117981673 is about 10861.9368898922. The cubic root of 117981673 is about 490.4614187534.

The spelling of 117981673 in words is "one hundred seventeen million, nine hundred eighty-one thousand, six hundred seventy-three".