1922401689 has 16 divisors (see below), whose sum is σ = 2761981824. Its totient is φ = 1182326400.

The previous prime is 1922401669. The next prime is 1922401693. The reversal of 1922401689 is 9861042291.

It is not a de Polignac number, because 1922401689 - 2¹² = 1922397593 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1922401689.

It is not an unprimeable number, because it can be changed into a prime (1922401669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57949 + ... + 84869.

It is an arithmetic number, because the mean of its divisors is an integer number (172623864).

Almost surely, 2^1922401689 is an apocalyptic number.

It is an amenable number.

1922401689 is a deficient number, since it is larger than the sum of its proper divisors (839580135).

1922401689 is a wasteful number, since it uses less digits than its factorization.

1922401689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28768.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1922401689 is about 43845.2014364172. The cubic root of 1922401689 is about 1243.4110229845.

The spelling of 1922401689 in words is "one billion, nine hundred twenty-two million, four hundred one thousand, six hundred eighty-nine".