1836338680 has 128 divisors (see below), whose sum is σ = 4614382080. Its totient is φ = 652101120.

The previous prime is 1836338663. The next prime is 1836338689. The reversal of 1836338680 is 868336381.

It is a self number, because there is not a number n which added to its sum of digits gives 1836338680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836338689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4922974 + ... + 4923346.

It is an arithmetic number, because the mean of its divisors is an integer number (36049860).

Almost surely, 2^1836338680 is an apocalyptic number.

1836338680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836338680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2307191040).

1836338680 is an abundant number, since it is smaller than the sum of its proper divisors (2778043400).

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

1836338680 is a wasteful number, since it uses less digits than its factorization.

1836338680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 1836338680 is about 42852.5224461758. The cubic root of 1836338680 is about 1224.5718186993.

The spelling of 1836338680 in words is "one billion, eight hundred thirty-six million, three hundred thirty-eight thousand, six hundred eighty".