1923638422 has 4 divisors (see below), whose sum is σ = 2885457636. Its totient is φ = 961819210.

The previous prime is 1923638389. The next prime is 1923638441. The reversal of 1923638422 is 2248363291.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480909604 + ... + 480909607.

It is an arithmetic number, because the mean of its divisors is an integer number (721364409).

Almost surely, 2^1923638422 is an apocalyptic number.

1923638422 is a deficient number, since it is larger than the sum of its proper divisors (961819214).

1923638422 is an equidigital number, since it uses as much as digits as its factorization.

1923638422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961819213.

The product of its digits is 124416, while the sum is 40.

The square root of 1923638422 is about 43859.3025708344. The cubic root of 1923638422 is about 1243.6776058062.

The spelling of 1923638422 in words is "one billion, nine hundred twenty-three million, six hundred thirty-eight thousand, four hundred twenty-two".