4019722909 has 2 divisors, whose sum is σ = 4019722910. Its totient is φ = 4019722908.

The previous prime is 4019722877. The next prime is 4019722919. The reversal of 4019722909 is 9092279104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2600694009 + 1419028900 = 50997^2 + 37670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4019722909 - 2⁵ = 4019722877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4019722919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2009861454 + 2009861455.

It is an arithmetic number, because the mean of its divisors is an integer number (2009861455).

Almost surely, 2^4019722909 is an apocalyptic number.

It is an amenable number.

4019722909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4019722909 is an equidigital number, since it uses as much as digits as its factorization.

4019722909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 4019722909 is about 63401.2847582760. The cubic root of 4019722909 is about 1590.0057894387.

The spelling of 4019722909 in words is "four billion, nineteen million, seven hundred twenty-two thousand, nine hundred nine".