445365816 has 32 divisors (see below), whose sum is σ = 1272474240. Its totient is φ = 127247328.

The previous prime is 445365797. The next prime is 445365827. The reversal of 445365816 is 618563544.

It is a super-2 number, since 2×445365816² = 396701420122691712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325326 + ... + 1325661.

It is an arithmetic number, because the mean of its divisors is an integer number (39764820).

Almost surely, 2^445365816 is an apocalyptic number.

It is an amenable number.

445365816 is an abundant number, since it is smaller than the sum of its proper divisors (827108424).

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

445365816 is a wasteful number, since it uses less digits than its factorization.

445365816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651003 (or 2650999 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 445365816 is about 21103.6919992688. The cubic root of 445365816 is about 763.6698179427.

The spelling of 445365816 in words is "four hundred forty-five million, three hundred sixty-five thousand, eight hundred sixteen".