1808134534 has 4 divisors (see below), whose sum is σ = 2712201804. Its totient is φ = 904067266.

The previous prime is 1808134529. The next prime is 1808134609. The reversal of 1808134534 is 4354318081.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1808134493 and 1808134502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452033632 + ... + 452033635.

It is an arithmetic number, because the mean of its divisors is an integer number (678050451).

Almost surely, 2^1808134534 is an apocalyptic number.

1808134534 is a deficient number, since it is larger than the sum of its proper divisors (904067270).

1808134534 is an equidigital number, since it uses as much as digits as its factorization.

1808134534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904067269.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1808134534 is about 42522.1652082770. The cubic root of 1808134534 is about 1218.2700856058.

The spelling of 1808134534 in words is "one billion, eight hundred eight million, one hundred thirty-four thousand, five hundred thirty-four".