2145445244 has 12 divisors (see below), whose sum is σ = 3917769744. Its totient is φ = 1026082464.

The previous prime is 2145445229. The next prime is 2145445273. The reversal of 2145445244 is 4425445412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11659937 + ... + 11660120.

It is an arithmetic number, because the mean of its divisors is an integer number (326480812).

Almost surely, 2^2145445244 is an apocalyptic number.

It is an amenable number.

2145445244 is a deficient number, since it is larger than the sum of its proper divisors (1772324500).

2145445244 is a wasteful number, since it uses less digits than its factorization.

2145445244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23320084 (or 23320082 counting only the distinct ones).

The product of its digits is 102400, while the sum is 35.

The square root of 2145445244 is about 46318.9512402861. The cubic root of 2145445244 is about 1289.7508170019.

The spelling of 2145445244 in words is "two billion, one hundred forty-five million, four hundred forty-five thousand, two hundred forty-four".