4441556145 has 16 divisors (see below), whose sum is σ = 7653143232. Its totient is φ = 2186612160.

The previous prime is 4441556143. The next prime is 4441556149. The reversal of 4441556145 is 5416551444.

It is not a de Polignac number, because 4441556145 - 2¹ = 4441556143 is a prime.

It is a super-2 number, since 2×4441556145² = 39454841978374522050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4441556143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11388411 + ... + 11388800.

It is an arithmetic number, because the mean of its divisors is an integer number (478321452).

Almost surely, 2^4441556145 is an apocalyptic number.

It is an amenable number.

4441556145 is a deficient number, since it is larger than the sum of its proper divisors (3211587087).

4441556145 is a wasteful number, since it uses less digits than its factorization.

4441556145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777232.

The product of its digits is 192000, while the sum is 39.

The square root of 4441556145 is about 66645.0009002926. Note that the first 3 decimals coincide. The cubic root of 4441556145 is about 1643.7851477591.

The spelling of 4441556145 in words is "four billion, four hundred forty-one million, five hundred fifty-six thousand, one hundred forty-five".