803628638 has 4 divisors (see below), whose sum is σ = 1205442960. Its totient is φ = 401814318.

The previous prime is 803628613. The next prime is 803628667. The reversal of 803628638 is 836826308.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200907158 + ... + 200907161.

It is an arithmetic number, because the mean of its divisors is an integer number (301360740).

Almost surely, 2^803628638 is an apocalyptic number.

803628638 is a deficient number, since it is larger than the sum of its proper divisors (401814322).

803628638 is a wasteful number, since it uses less digits than its factorization.

803628638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401814321.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 803628638 is about 28348.3445372036. The cubic root of 803628638 is about 929.7192037771.

The spelling of 803628638 in words is "eight hundred three million, six hundred twenty-eight thousand, six hundred thirty-eight".