1923313709 has 2 divisors, whose sum is σ = 1923313710. Its totient is φ = 1923313708.

The previous prime is 1923313681. The next prime is 1923313723. The reversal of 1923313709 is 9073133291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536404809 + 386908900 = 39197^2 + 19670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1923313709 - 2²⁰ = 1922265133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1923313739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961656854 + 961656855.

It is an arithmetic number, because the mean of its divisors is an integer number (961656855).

Almost surely, 2^1923313709 is an apocalyptic number.

It is an amenable number.

1923313709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923313709 is an equidigital number, since it uses as much as digits as its factorization.

1923313709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 1923313709 is about 43855.6006571567. The cubic root of 1923313709 is about 1243.6076236643.

The spelling of 1923313709 in words is "one billion, nine hundred twenty-three million, three hundred thirteen thousand, seven hundred nine".