1922941649 has 2 divisors, whose sum is σ = 1922941650. Its totient is φ = 1922941648.

The previous prime is 1922941637. The next prime is 1922941661. The reversal of 1922941649 is 9461492291.

It is a balanced prime because it is at equal distance from previous prime (1922941637) and next prime (1922941661).

It can be written as a sum of positive squares in only one way, i.e., 1291324225 + 631617424 = 35935^2 + 25132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922941649 - 2¹⁶ = 1922876113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1922941549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961470824 + 961470825.

It is an arithmetic number, because the mean of its divisors is an integer number (961470825).

Almost surely, 2^1922941649 is an apocalyptic number.

It is an amenable number.

1922941649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922941649 is an equidigital number, since it uses as much as digits as its factorization.

1922941649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 47.

The square root of 1922941649 is about 43851.3585764455. The cubic root of 1922941649 is about 1243.5274276135.

The spelling of 1922941649 in words is "one billion, nine hundred twenty-two million, nine hundred forty-one thousand, six hundred forty-nine".