2145256044 has 48 divisors (see below), whose sum is σ = 5310442368. Its totient is φ = 671701248.

The previous prime is 2145256039. The next prime is 2145256081. The reversal of 2145256044 is 4406525412.

2145256044 = 16372² + 16373² + ... + 16379².

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2145255996 and 2145256014.

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, 96639 + ... + 116745.

It is an arithmetic number, because the mean of its divisors is an integer number (110634216).

Almost surely, 2^2145256044 is an apocalyptic number.

It is an amenable number.

2145256044 is an abundant number, since it is smaller than the sum of its proper divisors (3165186324).

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

2145256044 is a wasteful number, since it uses less digits than its factorization.

2145256044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20654 (or 20652 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 2145256044 is about 46316.9088346794. The cubic root of 2145256044 is about 1289.7129028784.

The spelling of 2145256044 in words is "two billion, one hundred forty-five million, two hundred fifty-six thousand, forty-four".