115981950 has 48 divisors (see below), whose sum is σ = 328728960. Its totient is φ = 26509920.

The previous prime is 115981937. The next prime is 115981951. The reversal of 115981950 is 59189511.

It is a junction number, because it is equal to n+sod(n) for n = 115981899 and 115981908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115981951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54180 + ... + 56279.

It is an arithmetic number, because the mean of its divisors is an integer number (6848520).

Almost surely, 2^115981950 is an apocalyptic number.

115981950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115981950 is an abundant number, since it is smaller than the sum of its proper divisors (212747010).

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

115981950 is a wasteful number, since it uses less digits than its factorization.

115981950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110481 (or 110476 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 39.

The square root of 115981950 is about 10769.4916314560. The cubic root of 115981950 is about 487.6745988667.

The spelling of 115981950 in words is "one hundred fifteen million, nine hundred eighty-one thousand, nine hundred fifty".