1838385834 has 16 divisors (see below), whose sum is σ = 3678240288. Its totient is φ = 612550512.

The previous prime is 1838385827. The next prime is 1838385847. The reversal of 1838385834 is 4385838381.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44572 + ... + 75255.

It is an arithmetic number, because the mean of its divisors is an integer number (229890018).

Almost surely, 2^1838385834 is an apocalyptic number.

1838385834 is an abundant number, since it is smaller than the sum of its proper divisors (1839854454).

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

1838385834 is a wasteful number, since it uses less digits than its factorization.

1838385834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122389.

The product of its digits is 2211840, while the sum is 51.

The square root of 1838385834 is about 42876.4018313104. The cubic root of 1838385834 is about 1225.0267014033.

The spelling of 1838385834 in words is "one billion, eight hundred thirty-eight million, three hundred eighty-five thousand, eight hundred thirty-four".