1840188834 has 64 divisors (see below), whose sum is σ = 4723505280. Its totient is φ = 524828160.

The previous prime is 1840188829. The next prime is 1840188859. The reversal of 1840188834 is 4388810481.

It is a self number, because there is not a number n which added to its sum of digits gives 1840188834.

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 in 31 ways as a sum of consecutive naturals, for example, 81019 + ... + 101214.

It is an arithmetic number, because the mean of its divisors is an integer number (73804770).

Almost surely, 2^1840188834 is an apocalyptic number.

1840188834 is an abundant number, since it is smaller than the sum of its proper divisors (2883316446).

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

1840188834 is a wasteful number, since it uses less digits than its factorization.

1840188834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182272 (or 182266 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 1840188834 is about 42897.4222302460. The cubic root of 1840188834 is about 1225.4270528829.

The spelling of 1840188834 in words is "one billion, eight hundred forty million, one hundred eighty-eight thousand, eight hundred thirty-four".