2202561638 has 8 divisors (see below), whose sum is σ = 3304387632. Its totient is φ = 1101099096.

The previous prime is 2202561631. The next prime is 2202561661. The reversal of 2202561638 is 8361652022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2202561598 and 2202561607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202561631) 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 3 ways as a sum of consecutive naturals, for example, 75170 + ... + 100277.

It is an arithmetic number, because the mean of its divisors is an integer number (413048454).

Almost surely, 2^2202561638 is an apocalyptic number.

2202561638 is a deficient number, since it is larger than the sum of its proper divisors (1101825994).

2202561638 is a wasteful number, since it uses less digits than its factorization.

2202561638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181726.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2202561638 is about 46931.4568067091. The cubic root of 2202561638 is about 1301.0960456707.

The spelling of 2202561638 in words is "two billion, two hundred two million, five hundred sixty-one thousand, six hundred thirty-eight".