1818538834 has 8 divisors (see below), whose sum is σ = 3117495168. Its totient is φ = 779373780.

The previous prime is 1818538793. The next prime is 1818538853. The reversal of 1818538834 is 4388358181.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64947802 + ... + 64947829.

It is an arithmetic number, because the mean of its divisors is an integer number (389686896).

Almost surely, 2^1818538834 is an apocalyptic number.

1818538834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1818538834 is a deficient number, since it is larger than the sum of its proper divisors (1298956334).

1818538834 is a wasteful number, since it uses less digits than its factorization.

1818538834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129895640.

The product of its digits is 737280, while the sum is 49.

The square root of 1818538834 is about 42644.3294471844. The cubic root of 1818538834 is about 1220.6023259755.

The spelling of 1818538834 in words is "one billion, eight hundred eighteen million, five hundred thirty-eight thousand, eight hundred thirty-four".