1969812133 has 2 divisors, whose sum is σ = 1969812134. Its totient is φ = 1969812132.

The previous prime is 1969812121. The next prime is 1969812197. The reversal of 1969812133 is 3312189691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1962667204 + 7144929 = 44302^2 + 2673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969812133 - 2⁵ = 1969812101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1969812133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969812433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984906066 + 984906067.

It is an arithmetic number, because the mean of its divisors is an integer number (984906067).

Almost surely, 2^1969812133 is an apocalyptic number.

It is an amenable number.

1969812133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969812133 is an equidigital number, since it uses as much as digits as its factorization.

1969812133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 1969812133 is about 44382.5656423781. The cubic root of 1969812133 is about 1253.5498311229.

The spelling of 1969812133 in words is "one billion, nine hundred sixty-nine million, eight hundred twelve thousand, one hundred thirty-three".