1968434929 has 2 divisors, whose sum is σ = 1968434930. Its totient is φ = 1968434928.

The previous prime is 1968434917. The next prime is 1968434933. The reversal of 1968434929 is 9294348691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1813482225 + 154952704 = 42585^2 + 12448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968434929 - 2¹¹ = 1968432881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1968434929.

It is not a weakly prime, because it can be changed into another prime (1968434989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984217464 + 984217465.

It is an arithmetic number, because the mean of its divisors is an integer number (984217465).

Almost surely, 2^1968434929 is an apocalyptic number.

It is an amenable number.

1968434929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968434929 is an equidigital number, since it uses as much as digits as its factorization.

1968434929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 1968434929 is about 44367.0477832366. The cubic root of 1968434929 is about 1253.2576211353.

The spelling of 1968434929 in words is "one billion, nine hundred sixty-eight million, four hundred thirty-four thousand, nine hundred twenty-nine".