802991838 has 32 divisors (see below), whose sum is σ = 1855042560. Its totient is φ = 229016960.

The previous prime is 802991831. The next prime is 802991857. The reversal of 802991838 is 838199208.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802991831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356718 + ... + 358961.

It is an arithmetic number, because the mean of its divisors is an integer number (57970080).

Almost surely, 2^802991838 is an apocalyptic number.

802991838 is an abundant number, since it is smaller than the sum of its proper divisors (1052050722).

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

802991838 is a wasteful number, since it uses less digits than its factorization.

802991838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715712.

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 802991838 is about 28337.1106148810. The cubic root of 802991838 is about 929.4735672522.

The spelling of 802991838 in words is "eight hundred two million, nine hundred ninety-one thousand, eight hundred thirty-eight".