1922772817 has 8 divisors (see below), whose sum is σ = 2197728512. Its totient is φ = 1647885600.

The previous prime is 1922772779. The next prime is 1922772823. The reversal of 1922772817 is 7182772291.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1922772817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1922772827) 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 7 ways as a sum of consecutive naturals, for example, 79192 + ... + 100582.

It is an arithmetic number, because the mean of its divisors is an integer number (274716064).

Almost surely, 2^1922772817 is an apocalyptic number.

It is an amenable number.

1922772817 is a deficient number, since it is larger than the sum of its proper divisors (274955695).

1922772817 is a wasteful number, since it uses less digits than its factorization.

1922772817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34239.

The product of its digits is 197568, while the sum is 46.

The square root of 1922772817 is about 43849.4334855081. The cubic root of 1922772817 is about 1243.4910331364.

The spelling of 1922772817 in words is "one billion, nine hundred twenty-two million, seven hundred seventy-two thousand, eight hundred seventeen".