802091838 has 8 divisors (see below), whose sum is σ = 1604183688. Its totient is φ = 267363944.

The previous prime is 802091833. The next prime is 802091879. The reversal of 802091838 is 838190208.

It is a sphenic number, since it is the product of 3 distinct primes.

802091838 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 802091796 and 802091805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802091833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66840981 + ... + 66840992.

It is an arithmetic number, because the mean of its divisors is an integer number (200522961).

Almost surely, 2^802091838 is an apocalyptic number.

802091838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

802091838 is a wasteful number, since it uses less digits than its factorization.

802091838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133681978.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 802091838 is about 28321.2259268556. The cubic root of 802091838 is about 929.1261835079.

The spelling of 802091838 in words is "eight hundred two million, ninety-one thousand, eight hundred thirty-eight".