2115191983 has 8 divisors (see below), whose sum is σ = 2125131552. Its totient is φ = 2105266176.

The previous prime is 2115191963. The next prime is 2115192007. The reversal of 2115191983 is 3891915112.

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

It is a cyclic number.

It is not a de Polignac number, because 2115191983 - 2⁵ = 2115191951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115191933) 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, 423366 + ... + 428332.

It is an arithmetic number, because the mean of its divisors is an integer number (265641444).

Almost surely, 2^2115191983 is an apocalyptic number.

2115191983 is a deficient number, since it is larger than the sum of its proper divisors (9939569).

2115191983 is a wasteful number, since it uses less digits than its factorization.

2115191983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6881.

The product of its digits is 19440, while the sum is 40.

The square root of 2115191983 is about 45991.2163679109. The cubic root of 2115191983 is about 1283.6597699673.

The spelling of 2115191983 in words is "two billion, one hundred fifteen million, one hundred ninety-one thousand, nine hundred eighty-three".