1923657422 has 4 divisors (see below), whose sum is σ = 2885486136. Its totient is φ = 961828710.

The previous prime is 1923657401. The next prime is 1923657427. The reversal of 1923657422 is 2247563291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2247563291 = 71 ⋅31655821.

It is a self number, because there is not a number n which added to its sum of digits gives 1923657422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923657427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480914354 + ... + 480914357.

It is an arithmetic number, because the mean of its divisors is an integer number (721371534).

Almost surely, 2^1923657422 is an apocalyptic number.

1923657422 is a deficient number, since it is larger than the sum of its proper divisors (961828714).

1923657422 is an equidigital number, since it uses as much as digits as its factorization.

1923657422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961828713.

The product of its digits is 181440, while the sum is 41.

The square root of 1923657422 is about 43859.5191720110. The cubic root of 1923657422 is about 1243.6817004421.

The spelling of 1923657422 in words is "one billion, nine hundred twenty-three million, six hundred fifty-seven thousand, four hundred twenty-two".