201989031764 has 12 divisors (see below), whose sum is σ = 380671636884. Its totient is φ = 93225706944.

The previous prime is 201989031763. The next prime is 201989031779. The reversal of 201989031764 is 467130989102.

201989031764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 114988810000 + 87000221764 = 339100^2 + 294958^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201989031763) 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 in 3 ways as a sum of consecutive naturals, for example, 1942202177 + ... + 1942202280.

It is an arithmetic number, because the mean of its divisors is an integer number (31722636407).

Almost surely, 2^201989031764 is an apocalyptic number.

It is an amenable number.

201989031764 is a deficient number, since it is larger than the sum of its proper divisors (178682605120).

201989031764 is a wasteful number, since it uses less digits than its factorization.

201989031764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884404474 (or 3884404472 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 201989031764 in words is "two hundred one billion, nine hundred eighty-nine million, thirty-one thousand, seven hundred sixty-four".