4494644945 has 16 divisors (see below), whose sum is σ = 6165447168. Its totient is φ = 3081360960.

The previous prime is 4494644929. The next prime is 4494644969. The reversal of 4494644945 is 5494464944.

It is a happy number.

It is not a de Polignac number, because 4494644945 - 2⁴ = 4494644929 is a prime.

It is a super-2 number, since 2×4494644945² = 40403666363228106050, which contains 22 as substring.

It is a Duffinian number.

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, 186275 + ... + 209015.

It is an arithmetic number, because the mean of its divisors is an integer number (385340448).

Almost surely, 2^4494644945 is an apocalyptic number.

It is an amenable number.

4494644945 is a deficient number, since it is larger than the sum of its proper divisors (1670802223).

4494644945 is a wasteful number, since it uses less digits than its factorization.

4494644945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28400.

The product of its digits is 9953280, while the sum is 53.

The square root of 4494644945 is about 67042.1132199754. The cubic root of 4494644945 is about 1650.3084755363.

The spelling of 4494644945 in words is "four billion, four hundred ninety-four million, six hundred forty-four thousand, nine hundred forty-five".