2146041864 has 128 divisors (see below), whose sum is σ = 6298387200. Its totient is φ = 684116928.

The previous prime is 2146041857. The next prime is 2146041889. The reversal of 2146041864 is 4681406412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399742 + ... + 405074.

It is an arithmetic number, because the mean of its divisors is an integer number (49206150).

Almost surely, 2^2146041864 is an apocalyptic number.

2146041864 is a gapful number since it is divisible by the number (24) 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 2146041864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3149193600).

2146041864 is an abundant number, since it is smaller than the sum of its proper divisors (4152345336).

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

2146041864 is an equidigital number, since it uses as much as digits as its factorization.

2146041864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5383 (or 5361 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 2146041864 is about 46325.3911370428. The cubic root of 2146041864 is about 1289.8703601468.

The spelling of 2146041864 in words is "two billion, one hundred forty-six million, forty-one thousand, eight hundred sixty-four".