117501638 has 4 divisors (see below), whose sum is σ = 176252460. Its totient is φ = 58750818.

The previous prime is 117501623. The next prime is 117501661. The reversal of 117501638 is 836105711.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29375408 + ... + 29375411.

It is an arithmetic number, because the mean of its divisors is an integer number (44063115).

Almost surely, 2^117501638 is an apocalyptic number.

117501638 is a deficient number, since it is larger than the sum of its proper divisors (58750822).

117501638 is an equidigital number, since it uses as much as digits as its factorization.

117501638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58750821.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 117501638 is about 10839.8172493820. The cubic root of 117501638 is about 489.7953303217.

The spelling of 117501638 in words is "one hundred seventeen million, five hundred one thousand, six hundred thirty-eight".