117197189 has 2 divisors, whose sum is σ = 117197190. Its totient is φ = 117197188.

The previous prime is 117197177. The next prime is 117197221. The reversal of 117197189 is 981791711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70274689 + 46922500 = 8383^2 + 6850^2 .

It is a cyclic number.

It is not a de Polignac number, because 117197189 - 2¹² = 117193093 is a prime.

It is a super-2 number, since 2×117197189² = 27470362219003442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110197189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58598594 + 58598595.

It is an arithmetic number, because the mean of its divisors is an integer number (58598595).

Almost surely, 2^117197189 is an apocalyptic number.

It is an amenable number.

117197189 is a deficient number, since it is larger than the sum of its proper divisors (1).

117197189 is an equidigital number, since it uses as much as digits as its factorization.

117197189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 44.

The square root of 117197189 is about 10825.7650537964. The cubic root of 117197189 is about 489.3719414065.

The spelling of 117197189 in words is "one hundred seventeen million, one hundred ninety-seven thousand, one hundred eighty-nine".