2044400145 has 32 divisors (see below), whose sum is σ = 3325069440. Its totient is φ = 1072389120.

The previous prime is 2044400143. The next prime is 2044400147. The reversal of 2044400145 is 5410044402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2044400143) and next prime (2044400147).

It is not a de Polignac number, because 2044400145 - 2¹ = 2044400143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2044400143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 884251 + ... + 886559.

It is an arithmetic number, because the mean of its divisors is an integer number (103908420).

Almost surely, 2^2044400145 is an apocalyptic number.

It is an amenable number.

2044400145 is a deficient number, since it is larger than the sum of its proper divisors (1280669295).

2044400145 is a wasteful number, since it uses less digits than its factorization.

2044400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2044400145 is about 45215.0433484255. The cubic root of 2044400145 is about 1269.1763409181.

Adding to 2044400145 its reverse (5410044402), we get a palindrome (7454444547).

The spelling of 2044400145 in words is "two billion, forty-four million, four hundred thousand, one hundred forty-five".