464521816 has 16 divisors (see below), whose sum is σ = 950158440. Its totient is φ = 211146240.

The previous prime is 464521769. The next prime is 464521829. The reversal of 464521816 is 618125464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639241 + ... + 2639416.

Almost surely, 2^464521816 is an apocalyptic number.

It is an amenable number.

464521816 is an abundant number, since it is smaller than the sum of its proper divisors (485636624).

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

464521816 is a wasteful number, since it uses less digits than its factorization.

464521816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278674 (or 5278670 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 464521816 is about 21552.7681748772. The cubic root of 464521816 is about 774.4654328163.

The spelling of 464521816 in words is "four hundred sixty-four million, five hundred twenty-one thousand, eight hundred sixteen".