2251486244 has 72 divisors (see below), whose sum is σ = 4773460608. Its totient is φ = 910103040.

The previous prime is 2251486231. The next prime is 2251486247. The reversal of 2251486244 is 4426841522.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 2251486198 and 2251486207.

It is not an unprimeable number, because it can be changed into a prime (2251486247) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3567809 + ... + 3568439.

It is an arithmetic number, because the mean of its divisors is an integer number (66298064).

Almost surely, 2^2251486244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251486244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2386730304).

2251486244 is an abundant number, since it is smaller than the sum of its proper divisors (2521974364).

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

2251486244 is a wasteful number, since it uses less digits than its factorization.

2251486244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1012 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

The square root of 2251486244 is about 47449.8287035896. The cubic root of 2251486244 is about 1310.6591566493.

The spelling of 2251486244 in words is "two billion, two hundred fifty-one million, four hundred eighty-six thousand, two hundred forty-four".