1642222110638 has 8 divisors (see below), whose sum is σ = 2463632030088. Its totient is φ = 821011433944.

The previous prime is 1642222110619. The next prime is 1642222110649. The reversal of 1642222110638 is 8360112222461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49790081 + ... + 49823052.

It is an arithmetic number, because the mean of its divisors is an integer number (307954003761).

Almost surely, 2^{1642222110638} is an apocalyptic number.

1642222110638 is a deficient number, since it is larger than the sum of its proper divisors (821409919450).

1642222110638 is an equidigital number, since it uses as much as digits as its factorization.

1642222110638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99621378.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 1642222110638 in words is "one trillion, six hundred forty-two billion, two hundred twenty-two million, one hundred ten thousand, six hundred thirty-eight".