1966966733 has 2 divisors, whose sum is σ = 1966966734. Its totient is φ = 1966966732.

The previous prime is 1966966681. The next prime is 1966966801. The reversal of 1966966733 is 3376696691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273276489 + 693690244 = 35683^2 + 26338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1966966733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966966033) 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, 983483366 + 983483367.

It is an arithmetic number, because the mean of its divisors is an integer number (983483367).

Almost surely, 2^1966966733 is an apocalyptic number.

It is an amenable number.

1966966733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966966733 is an equidigital number, since it uses as much as digits as its factorization.

1966966733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 56.

The square root of 1966966733 is about 44350.4986781434. The cubic root of 1966966733 is about 1252.9459546666.

The spelling of 1966966733 in words is "one billion, nine hundred sixty-six million, nine hundred sixty-six thousand, seven hundred thirty-three".