2099923845 has 16 divisors (see below), whose sum is σ = 3360673152. Its totient is φ = 1119694400.

The previous prime is 2099923831. The next prime is 2099923873. The reversal of 2099923845 is 5483299902.

It is a happy number.

It is not a de Polignac number, because 2099923845 - 2⁴ = 2099923829 is a prime.

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, 60520 + ... + 88670.

It is an arithmetic number, because the mean of its divisors is an integer number (210042072).

Almost surely, 2^2099923845 is an apocalyptic number.

It is an amenable number.

2099923845 is a deficient number, since it is larger than the sum of its proper divisors (1260749307).

2099923845 is a wasteful number, since it uses less digits than its factorization.

2099923845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33132.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 2099923845 is about 45824.9260228535. The cubic root of 2099923845 is about 1280.5636850375.

It can be divided in two parts, 20999 and 23845, that added together give a palindrome (44844).

The spelling of 2099923845 in words is "two billion, ninety-nine million, nine hundred twenty-three thousand, eight hundred forty-five".