1834213815 has 72 divisors (see below), whose sum is σ = 3835475280. Its totient is φ = 838470528.

The previous prime is 1834213807. The next prime is 1834213817. The reversal of 1834213815 is 5183124381.

It is not a de Polignac number, because 1834213815 - 2³ = 1834213807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1834213815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1834213817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 44131 + ... + 74939.

It is an arithmetic number, because the mean of its divisors is an integer number (53270490).

Almost surely, 2^1834213815 is an apocalyptic number.

1834213815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1834213815 is an abundant number, since it is smaller than the sum of its proper divisors (2001261465).

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

1834213815 is an equidigital number, since it uses as much as digits as its factorization.

1834213815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30843 (or 30824 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1834213815 is about 42827.7225054053. The cubic root of 1834213815 is about 1224.0993107137.

The spelling of 1834213815 in words is "one billion, eight hundred thirty-four million, two hundred thirteen thousand, eight hundred fifteen".