2186974944 has 384 divisors, whose sum is σ = 8082063360. Its totient is φ = 558835200.

The previous prime is 2186974931. The next prime is 2186974963. The reversal of 2186974944 is 4494796812.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 4723257 + ... + 4723719.

It is an arithmetic number, because the mean of its divisors is an integer number (21047040).

Almost surely, 2^2186974944 is an apocalyptic number.

2186974944 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 2186974944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4041031680).

2186974944 is an abundant number, since it is smaller than the sum of its proper divisors (5895088416).

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

2186974944 is a wasteful number, since it uses less digits than its factorization.

2186974944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 557 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 2186974944 is about 46765.1039130675. The cubic root of 2186974944 is about 1298.0196561925.

The spelling of 2186974944 in words is "two billion, one hundred eighty-six million, nine hundred seventy-four thousand, nine hundred forty-four".