117812169 has 12 divisors (see below), whose sum is σ = 170353092. Its totient is φ = 78458400.

The previous prime is 117812153. The next prime is 117812207. The reversal of 117812169 is 961218711.

It can be written as a sum of positive squares in 2 ways, for example, as 32490000 + 85322169 = 5700^2 + 9237^2 .

It is not a de Polignac number, because 117812169 - 2⁴ = 117812153 is a prime.

It is a super-2 number, since 2×117812169² = 27759414328969122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117812869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2779 + ... + 15599.

It is an arithmetic number, because the mean of its divisors is an integer number (14196091).

Almost surely, 2^117812169 is an apocalyptic number.

It is an amenable number.

117812169 is a deficient number, since it is larger than the sum of its proper divisors (52540923).

117812169 is a wasteful number, since it uses less digits than its factorization.

117812169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13848 (or 13845 counting only the distinct ones).

The product of its digits is 6048, while the sum is 36.

The square root of 117812169 is about 10854.1314254066. The cubic root of 117812169 is about 490.2264245791.

The spelling of 117812169 in words is "one hundred seventeen million, eight hundred twelve thousand, one hundred sixty-nine".