2184912640931 has 2 divisors, whose sum is σ = 2184912640932. Its totient is φ = 2184912640930.

The previous prime is 2184912640927. The next prime is 2184912641027. The reversal of 2184912640931 is 1390462194812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2184912640931 - 2² = 2184912640927 is a prime.

It is a super-2 number, since 2×2184912640931² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2184912640931.

It is not a weakly prime, because it can be changed into another prime (2184912640921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092456320465 + 1092456320466.

It is an arithmetic number, because the mean of its divisors is an integer number (1092456320466).

Almost surely, 2^{2184912640931} is an apocalyptic number.

2184912640931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2184912640931 is an equidigital number, since it uses as much as digits as its factorization.

2184912640931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 2184912640931 in words is "two trillion, one hundred eighty-four billion, nine hundred twelve million, six hundred forty thousand, nine hundred thirty-one".