115861019 has 8 divisors (see below), whose sum is σ = 116883360. Its totient is φ = 114843456.

The previous prime is 115860977. The next prime is 115861091. The reversal of 115861019 is 910168511.

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

It is a de Polignac number, because none of the positive numbers 2^k-115861019 is a prime.

It is a super-2 number, since 2×115861019² = 26847551447436722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115861099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60722 + ... + 62600.

It is an arithmetic number, because the mean of its divisors is an integer number (14610420).

Almost surely, 2^115861019 is an apocalyptic number.

115861019 is a deficient number, since it is larger than the sum of its proper divisors (1022341).

115861019 is a wasteful number, since it uses less digits than its factorization.

115861019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 115861019 is about 10763.8756495976. The cubic root of 115861019 is about 487.5050452250.

The spelling of 115861019 in words is "one hundred fifteen million, eight hundred sixty-one thousand, nineteen".