1942722089 has 16 divisors (see below), whose sum is σ = 2549575680. Its totient is φ = 1434134160.

The previous prime is 1942722077. The next prime is 1942722091. The reversal of 1942722089 is 9802272491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942722089 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942722289) 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 in 15 ways as a sum of consecutive naturals, for example, 662489 + ... + 665414.

It is an arithmetic number, because the mean of its divisors is an integer number (159348480).

Almost surely, 2^1942722089 is an apocalyptic number.

1942722089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1942722089 is a deficient number, since it is larger than the sum of its proper divisors (606853591).

1942722089 is a wasteful number, since it uses less digits than its factorization.

1942722089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327940.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1942722089 is about 44076.3211826940. The cubic root of 1942722089 is about 1247.7767604290.

The spelling of 1942722089 in words is "one billion, nine hundred forty-two million, seven hundred twenty-two thousand, eighty-nine".