2249017638 has 32 divisors (see below), whose sum is σ = 5147138304. Its totient is φ = 641760672.

The previous prime is 2249017597. The next prime is 2249017651. The reversal of 2249017638 is 8367109422.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2249017638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (160848072).

Almost surely, 2^2249017638 is an apocalyptic number.

2249017638 is an abundant number, since it is smaller than the sum of its proper divisors (2898120666).

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

2249017638 is a wasteful number, since it uses less digits than its factorization.

2249017638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67996.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2249017638 is about 47423.8087673270. The cubic root of 2249017638 is about 1310.1799643984.

The spelling of 2249017638 in words is "two billion, two hundred forty-nine million, seventeen thousand, six hundred thirty-eight".