116491638 has 8 divisors (see below), whose sum is σ = 232983288. Its totient is φ = 38830544.

The previous prime is 116491631. The next prime is 116491643. The reversal of 116491638 is 836194611.

It is a sphenic number, since it is the product of 3 distinct primes.

116491638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 116491596 and 116491605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116491631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9707631 + ... + 9707642.

It is an arithmetic number, because the mean of its divisors is an integer number (29122911).

Almost surely, 2^116491638 is an apocalyptic number.

116491638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

116491638 is a wasteful number, since it uses less digits than its factorization.

116491638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19415278.

The product of its digits is 31104, while the sum is 39.

The square root of 116491638 is about 10793.1292033404. The cubic root of 116491638 is about 488.3879244365.

The spelling of 116491638 in words is "one hundred sixteen million, four hundred ninety-one thousand, six hundred thirty-eight".