518401444 has 12 divisors (see below), whose sum is σ = 989675568. Its totient is φ = 235637000.

The previous prime is 518401441. The next prime is 518401447. The reversal of 518401444 is 444104815.

It is an interprime number because it is at equal distance from previous prime (518401441) and next prime (518401447).

It is not an unprimeable number, because it can be changed into a prime (518401441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5890882 + ... + 5890969.

It is an arithmetic number, because the mean of its divisors is an integer number (82472964).

Almost surely, 2^518401444 is an apocalyptic number.

It is an amenable number.

518401444 is a deficient number, since it is larger than the sum of its proper divisors (471274124).

518401444 is a wasteful number, since it uses less digits than its factorization.

518401444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11781866 (or 11781864 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 518401444 is about 22768.4308638079. The cubic root of 518401444 is about 803.3202859785.

The spelling of 518401444 in words is "five hundred eighteen million, four hundred one thousand, four hundred forty-four".