1820338234 has 16 divisors (see below), whose sum is σ = 3207869280. Its totient is φ = 763778160.

The previous prime is 1820338217. The next prime is 1820338277. The reversal of 1820338234 is 4328330281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820338234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182124 + ... + 3182695.

It is an arithmetic number, because the mean of its divisors is an integer number (200491830).

Almost surely, 2^1820338234 is an apocalyptic number.

1820338234 is a deficient number, since it is larger than the sum of its proper divisors (1387531046).

1820338234 is a wasteful number, since it uses less digits than its factorization.

1820338234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364845.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1820338234 is about 42665.4219948661. The cubic root of 1820338234 is about 1221.0047787158.

The spelling of 1820338234 in words is "one billion, eight hundred twenty million, three hundred thirty-eight thousand, two hundred thirty-four".