4445045145 has 24 divisors (see below), whose sum is σ = 7760994696. Its totient is φ = 2353383168.

The previous prime is 4445045123. The next prime is 4445045147. The reversal of 4445045145 is 5415405444.

4445045145 is a `hidden beast` number, since 4 + 4 + 4 + 504 + 5 + 145 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1401978249 + 3043066896 = 37443^2 + 55164^2 .

It is not a de Polignac number, because 4445045145 - 2¹² = 4445041049 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4445045147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354342 + ... + 366671.

It is an arithmetic number, because the mean of its divisors is an integer number (323374779).

Almost surely, 2^4445045145 is an apocalyptic number.

4445045145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4445045145 is a deficient number, since it is larger than the sum of its proper divisors (3315949551).

4445045145 is a wasteful number, since it uses less digits than its factorization.

4445045145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721161 (or 721158 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The square root of 4445045145 is about 66671.1717686138. The cubic root of 4445045145 is about 1644.2154522982.

The spelling of 4445045145 in words is "four billion, four hundred forty-five million, forty-five thousand, one hundred forty-five".