809342562 has 32 divisors (see below), whose sum is σ = 1958746752. Its totient is φ = 217638144.

The previous prime is 809342537. The next prime is 809342581. The reversal of 809342562 is 265243908.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 809342562.

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, 566053 + ... + 567480.

It is an arithmetic number, because the mean of its divisors is an integer number (61210836).

Almost surely, 2^809342562 is an apocalyptic number.

809342562 is an abundant number, since it is smaller than the sum of its proper divisors (1149404190).

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

809342562 is a wasteful number, since it uses less digits than its factorization.

809342562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133562.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 809342562 is about 28448.9465885822. The cubic root of 809342562 is about 931.9174844210.

The spelling of 809342562 in words is "eight hundred nine million, three hundred forty-two thousand, five hundred sixty-two".