805352638 has 4 divisors (see below), whose sum is σ = 1208028960. Its totient is φ = 402676318.

The previous prime is 805352629. The next prime is 805352641. The reversal of 805352638 is 836253508.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) 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 805352638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201338158 + ... + 201338161.

It is an arithmetic number, because the mean of its divisors is an integer number (302007240).

Almost surely, 2^805352638 is an apocalyptic number.

805352638 is a deficient number, since it is larger than the sum of its proper divisors (402676322).

805352638 is a wasteful number, since it uses less digits than its factorization.

805352638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402676321.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 805352638 is about 28378.7356659877. The cubic root of 805352638 is about 930.3835616757.

The spelling of 805352638 in words is "eight hundred five million, three hundred fifty-two thousand, six hundred thirty-eight".