117196187 has 2 divisors, whose sum is σ = 117196188. Its totient is φ = 117196186.

The previous prime is 117196169. The next prime is 117196193. The reversal of 117196187 is 781691711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117196187 - 2¹² = 117192091 is a prime.

It is not a weakly prime, because it can be changed into another prime (117196117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58598093 + 58598094.

It is an arithmetic number, because the mean of its divisors is an integer number (58598094).

Almost surely, 2^117196187 is an apocalyptic number.

117196187 is a deficient number, since it is larger than the sum of its proper divisors (1).

117196187 is an equidigital number, since it uses as much as digits as its factorization.

117196187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 41.

The square root of 117196187 is about 10825.7187752130. The cubic root of 117196187 is about 489.3705467425.

The spelling of 117196187 in words is "one hundred seventeen million, one hundred ninety-six thousand, one hundred eighty-seven".