2145244404 has 12 divisors (see below), whose sum is σ = 5005570304. Its totient is φ = 715081464.

The previous prime is 2145244403. The next prime is 2145244411. The reversal of 2145244404 is 4044425412.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145244403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89385172 + ... + 89385195.

Almost surely, 2^2145244404 is an apocalyptic number.

It is an amenable number.

2145244404 is an abundant number, since it is smaller than the sum of its proper divisors (2860325900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145244404 is a wasteful number, since it uses less digits than its factorization.

2145244404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178770374 (or 178770372 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

The square root of 2145244404 is about 46316.7831784549. The cubic root of 2145244404 is about 1289.7105702454.

Adding to 2145244404 its reverse (4044425412), we get a palindrome (6189669816).

It can be divided in two parts, 21452 and 44404, that added together give a palindrome (65856).

The spelling of 2145244404 in words is "two billion, one hundred forty-five million, two hundred forty-four thousand, four hundred four".