1772223842 has 8 divisors (see below), whose sum is σ = 2659323756. Its totient is φ = 885782592.

The previous prime is 1772223833. The next prime is 1772223883. The reversal of 1772223842 is 2483222771.

It can be written as a sum of positive squares in 2 ways, for example, as 1061521561 + 710702281 = 32581^2 + 26659^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1772223796 and 1772223805.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 157883 + ... + 168734.

Almost surely, 2^1772223842 is an apocalyptic number.

1772223842 is a deficient number, since it is larger than the sum of its proper divisors (887099914).

1772223842 is a wasteful number, since it uses less digits than its factorization.

1772223842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329332.

The product of its digits is 75264, while the sum is 38.

The square root of 1772223842 is about 42097.7890393308. The cubic root of 1772223842 is about 1210.1508911842.

The spelling of 1772223842 in words is "one billion, seven hundred seventy-two million, two hundred twenty-three thousand, eight hundred forty-two".