1922123977 has 2 divisors, whose sum is σ = 1922123978. Its totient is φ = 1922123976.

The previous prime is 1922123963. The next prime is 1922124047. The reversal of 1922123977 is 7793212291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1908903481 + 13220496 = 43691^2 + 3636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922123977 - 2¹⁹ = 1921599689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1922123927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961061988 + 961061989.

It is an arithmetic number, because the mean of its divisors is an integer number (961061989).

Almost surely, 2^1922123977 is an apocalyptic number.

It is an amenable number.

1922123977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922123977 is an equidigital number, since it uses as much as digits as its factorization.

1922123977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 1922123977 is about 43842.0343620138. The cubic root of 1922123977 is about 1243.3511453164.

The spelling of 1922123977 in words is "one billion, nine hundred twenty-two million, one hundred twenty-three thousand, nine hundred seventy-seven".