16923353869 has 2 divisors, whose sum is σ = 16923353870. Its totient is φ = 16923353868.

The previous prime is 16923353819. The next prime is 16923353899. The reversal of 16923353869 is 96835332961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14265435844 + 2657918025 = 119438^2 + 51555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16923353869 is a prime.

It is a super-2 number, since 2×16923353869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16923353819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8461676934 + 8461676935.

It is an arithmetic number, because the mean of its divisors is an integer number (8461676935).

Almost surely, 2^16923353869 is an apocalyptic number.

It is an amenable number.

16923353869 is a deficient number, since it is larger than the sum of its proper divisors (1).

16923353869 is an equidigital number, since it uses as much as digits as its factorization.

16923353869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 55.

The spelling of 16923353869 in words is "sixteen billion, nine hundred twenty-three million, three hundred fifty-three thousand, eight hundred sixty-nine".