2185733860 has 48 divisors (see below), whose sum is σ = 4973101056. Its totient is φ = 803722752.

The previous prime is 2185733783. The next prime is 2185733863. The reversal of 2185733860 is 683375812.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (2185733863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60132 + ... + 89371.

It is an arithmetic number, because the mean of its divisors is an integer number (103606272).

Almost surely, 2^2185733860 is an apocalyptic number.

2185733860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185733860 is an abundant number, since it is smaller than the sum of its proper divisors (2787367196).

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

2185733860 is a wasteful number, since it uses less digits than its factorization.

2185733860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149572 (or 149570 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 2185733860 is about 46751.8326913502. The cubic root of 2185733860 is about 1297.7740724834.

The spelling of 2185733860 in words is "two billion, one hundred eighty-five million, seven hundred thirty-three thousand, eight hundred sixty".