2120926805 has 16 divisors (see below), whose sum is σ = 2578794624. Its totient is φ = 1674335040.

The previous prime is 2120926799. The next prime is 2120926859. The reversal of 2120926805 is 5086290212.

It is a happy number.

It is not a de Polignac number, because 2120926805 - 2⁴ = 2120926789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425387 + ... + 430343.

It is an arithmetic number, because the mean of its divisors is an integer number (161174664).

Almost surely, 2^2120926805 is an apocalyptic number.

It is an amenable number.

2120926805 is a deficient number, since it is larger than the sum of its proper divisors (457867819).

2120926805 is a wasteful number, since it uses less digits than its factorization.

2120926805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2120926805 is about 46053.5210923117. The cubic root of 2120926805 is about 1284.8188321757.

The spelling of 2120926805 in words is "two billion, one hundred twenty million, nine hundred twenty-six thousand, eight hundred five".