805187834 has 16 divisors (see below), whose sum is σ = 1318680000. Its totient is φ = 365688960.

The previous prime is 805187827. The next prime is 805187839. The reversal of 805187834 is 438781508.

It is a super-2 number, since 2×805187834² = 1296654896043223112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (805187839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12827 + ... + 42129.

It is an arithmetic number, because the mean of its divisors is an integer number (82417500).

Almost surely, 2^805187834 is an apocalyptic number.

805187834 is a deficient number, since it is larger than the sum of its proper divisors (513492166).

805187834 is a wasteful number, since it uses less digits than its factorization.

805187834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30565.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 805187834 is about 28375.8318644582. The cubic root of 805187834 is about 930.3200940776.

The spelling of 805187834 in words is "eight hundred five million, one hundred eighty-seven thousand, eight hundred thirty-four".