2115770812 has 24 divisors (see below), whose sum is σ = 3788204112. Its totient is φ = 1033593600.

The previous prime is 2115770809. The next prime is 2115770933. The reversal of 2115770812 is 2180775112.

It is a super-2 number, since 2×2115770812² = 8952972257822278688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 30387 + ... + 71797.

It is an arithmetic number, because the mean of its divisors is an integer number (157841838).

Almost surely, 2^2115770812 is an apocalyptic number.

It is an amenable number.

2115770812 is a deficient number, since it is larger than the sum of its proper divisors (1672433300).

2115770812 is a wasteful number, since it uses less digits than its factorization.

2115770812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41709 (or 41707 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 2115770812 is about 45997.5087586274. The cubic root of 2115770812 is about 1283.7768518115.

The spelling of 2115770812 in words is "two billion, one hundred fifteen million, seven hundred seventy thousand, eight hundred twelve".