2115937578 has 24 divisors (see below), whose sum is σ = 4423876128. Its totient is φ = 674645752.

The previous prime is 2115937573. The next prime is 2115937619. The reversal of 2115937578 is 8757395112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2115937573) 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 11 ways as a sum of consecutive naturals, for example, 330150 + ... + 336497.

It is an arithmetic number, because the mean of its divisors is an integer number (184328172).

Almost surely, 2^2115937578 is an apocalyptic number.

2115937578 is an abundant number, since it is smaller than the sum of its proper divisors (2307938550).

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

2115937578 is a wasteful number, since it uses less digits than its factorization.

2115937578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666698 (or 666675 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The square root of 2115937578 is about 45999.3214949960. The cubic root of 2115937578 is about 1283.8105802135.

The spelling of 2115937578 in words is "two billion, one hundred fifteen million, nine hundred thirty-seven thousand, five hundred seventy-eight".