802644819 has 16 divisors (see below), whose sum is σ = 1087825920. Its totient is φ = 526331520.

The previous prime is 802644793. The next prime is 802644877. The reversal of 802644819 is 918446208.

It is not a de Polignac number, because 802644819 - 2¹⁵ = 802612051 is a prime.

It is a super-2 number, since 2×802644819² = 1288477410935085522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (802644889) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 57979 + ... + 70475.

It is an arithmetic number, because the mean of its divisors is an integer number (67989120).

Almost surely, 2^802644819 is an apocalyptic number.

802644819 is a deficient number, since it is larger than the sum of its proper divisors (285181101).

802644819 is a wasteful number, since it uses less digits than its factorization.

802644819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12850.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 802644819 is about 28330.9869048009. The cubic root of 802644819 is about 929.3396549477.

The spelling of 802644819 in words is "eight hundred two million, six hundred forty-four thousand, eight hundred nineteen".