117981633 has 32 divisors (see below), whose sum is σ = 197038080. Its totient is φ = 61004160.

The previous prime is 117981631. The next prime is 117981673. The reversal of 117981633 is 336189711.

It is not a de Polignac number, because 117981633 - 2¹ = 117981631 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 117981591 and 117981600.

It is not an unprimeable number, because it can be changed into a prime (117981631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54141 + ... + 56277.

It is an arithmetic number, because the mean of its divisors is an integer number (6157440).

Almost surely, 2^117981633 is an apocalyptic number.

It is an amenable number.

117981633 is a deficient number, since it is larger than the sum of its proper divisors (79056447).

117981633 is a wasteful number, since it uses less digits than its factorization.

117981633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397.

The product of its digits is 27216, while the sum is 39.

The square root of 117981633 is about 10861.9350485998. The cubic root of 117981633 is about 490.4613633254.

It can be divided in two parts, 11798 and 1633, that added together give a palindrome (13431).

The spelling of 117981633 in words is "one hundred seventeen million, nine hundred eighty-one thousand, six hundred thirty-three".