117819973 has 2 divisors, whose sum is σ = 117819974. Its totient is φ = 117819972.

The previous prime is 117819943. The next prime is 117820009. The reversal of 117819973 is 379918711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77141089 + 40678884 = 8783^2 + 6378^2 .

It is a cyclic number.

It is not a de Polignac number, because 117819973 - 2⁵ = 117819941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117819913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58909986 + 58909987.

It is an arithmetic number, because the mean of its divisors is an integer number (58909987).

Almost surely, 2^117819973 is an apocalyptic number.

It is an amenable number.

117819973 is a deficient number, since it is larger than the sum of its proper divisors (1).

117819973 is an equidigital number, since it uses as much as digits as its factorization.

117819973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 46.

The square root of 117819973 is about 10854.4909139029. The cubic root of 117819973 is about 490.2372487086.

The spelling of 117819973 in words is "one hundred seventeen million, eight hundred nineteen thousand, nine hundred seventy-three".