805274539384 has 64 divisors (see below), whose sum is σ = 1871656839360. Its totient is φ = 316894248960.

The previous prime is 805274539379. The next prime is 805274539387. The reversal of 805274539384 is 483935472508.

It is a happy number.

It is a super-2 number, since 2×805274539384² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805274539387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10276537 + ... + 10354600.

It is an arithmetic number, because the mean of its divisors is an integer number (29244638115).

Almost surely, 2^805274539384 is an apocalyptic number.

It is an amenable number.

805274539384 is an abundant number, since it is smaller than the sum of its proper divisors (1066382299976).

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

805274539384 is a wasteful number, since it uses less digits than its factorization.

805274539384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20631208 (or 20631204 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 805274539384 in words is "eight hundred five billion, two hundred seventy-four million, five hundred thirty-nine thousand, three hundred eighty-four".