2185890160 has 40 divisors (see below), whose sum is σ = 5129711856. Its totient is φ = 866181120.

The previous prime is 2185890151. The next prime is 2185890163. The reversal of 2185890160 is 610985812.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×2185890160³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185890163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119121 + ... + 136240.

Almost surely, 2^2185890160 is an apocalyptic number.

2185890160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185890160 is an abundant number, since it is smaller than the sum of its proper divisors (2943821696).

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

2185890160 is a wasteful number, since it uses less digits than its factorization.

2185890160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255481 (or 255475 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 2185890160 is about 46753.5042536920. The cubic root of 2185890160 is about 1297.8050059922.

The spelling of 2185890160 in words is "two billion, one hundred eighty-five million, eight hundred ninety thousand, one hundred sixty".