2182870890 has 384 divisors, whose sum is σ = 6880204800. Its totient is φ = 489646080.

The previous prime is 2182870843. The next prime is 2182870891. The reversal of 2182870890 is 980782812.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2182870891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 70415175 + ... + 70415205.

It is an arithmetic number, because the mean of its divisors is an integer number (17917200).

Almost surely, 2^2182870890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2182870890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3440102400).

2182870890 is an abundant number, since it is smaller than the sum of its proper divisors (4697333910).

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

2182870890 is a wasteful number, since it uses less digits than its factorization.

2182870890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 2182870890 is about 46721.2038586336. The cubic root of 2182870890 is about 1297.2071977871.

The spelling of 2182870890 in words is "two billion, one hundred eighty-two million, eight hundred seventy thousand, eight hundred ninety".