115981946 has 4 divisors (see below), whose sum is σ = 173972922. Its totient is φ = 57990972.

The previous prime is 115981937. The next prime is 115981951. The reversal of 115981946 is 649189511.

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

It can be written as a sum of positive squares in only one way, i.e., 115885225 + 96721 = 10765^2 + 311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 115981897 and 115981906.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28995485 + ... + 28995488.

Almost surely, 2^115981946 is an apocalyptic number.

115981946 is a deficient number, since it is larger than the sum of its proper divisors (57990976).

115981946 is an equidigital number, since it uses as much as digits as its factorization.

115981946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57990975.

The product of its digits is 77760, while the sum is 44.

The square root of 115981946 is about 10769.4914457462. The cubic root of 115981946 is about 487.6745932603.

The spelling of 115981946 in words is "one hundred fifteen million, nine hundred eighty-one thousand, nine hundred forty-six".