2115921008 has 40 divisors (see below), whose sum is σ = 4131469200. Its totient is φ = 1049771520.

The previous prime is 2115921007. The next prime is 2115921019. The reversal of 2115921008 is 8001295112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115921007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244543 + ... + 1246241.

It is an arithmetic number, because the mean of its divisors is an integer number (103286730).

Almost surely, 2^2115921008 is an apocalyptic number.

It is an amenable number.

2115921008 is a deficient number, since it is larger than the sum of its proper divisors (2015548192).

2115921008 is a wasteful number, since it uses less digits than its factorization.

2115921008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 2115921008 is about 45999.1413832911. The cubic root of 2115921008 is about 1283.8072290125.

The spelling of 2115921008 in words is "two billion, one hundred fifteen million, nine hundred twenty-one thousand, eight".