117806154 has 16 divisors (see below), whose sum is σ = 241092192. Its totient is φ = 38355408.

The previous prime is 117806093. The next prime is 117806173. The reversal of 117806154 is 451608711.

It is a happy number.

It is a super-4 number, since 4×117806154⁴ (a number of 33 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 228049 + ... + 228564.

It is an arithmetic number, because the mean of its divisors is an integer number (15068262).

Almost surely, 2^117806154 is an apocalyptic number.

117806154 is an abundant number, since it is smaller than the sum of its proper divisors (123286038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117806154 is a wasteful number, since it uses less digits than its factorization.

117806154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456661.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 117806154 is about 10853.8543384366. The cubic root of 117806154 is about 490.2180814621.

The spelling of 117806154 in words is "one hundred seventeen million, eight hundred six thousand, one hundred fifty-four".