116581900 has 18 divisors (see below), whose sum is σ = 252982940. Its totient is φ = 46632720.

The previous prime is 116581897. The next prime is 116581909. The reversal of 116581900 is 9185611.

It is a super-2 number, since 2×116581900² = 27182678815220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116581909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 582810 + ... + 583009.

Almost surely, 2^116581900 is an apocalyptic number.

116581900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116581900 is an abundant number, since it is smaller than the sum of its proper divisors (136401040).

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

116581900 is a wasteful number, since it uses less digits than its factorization.

116581900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165833 (or 1165826 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 116581900 is about 10797.3098501432. The cubic root of 116581900 is about 488.5140321721.

The spelling of 116581900 in words is "one hundred sixteen million, five hundred eighty-one thousand, nine hundred".