1418812861 has 2 divisors, whose sum is σ = 1418812862. Its totient is φ = 1418812860.

The previous prime is 1418812853. The next prime is 1418812883. The reversal of 1418812861 is 1682188141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1280279961 + 138532900 = 35781^2 + 11770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1418812861 - 2³ = 1418812853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1418812261) 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, 709406430 + 709406431.

It is an arithmetic number, because the mean of its divisors is an integer number (709406431).

Almost surely, 2^1418812861 is an apocalyptic number.

It is an amenable number.

1418812861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1418812861 is an equidigital number, since it uses as much as digits as its factorization.

1418812861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 40.

The square root of 1418812861 is about 37667.1323702774. The cubic root of 1418812861 is about 1123.6775534865.

The spelling of 1418812861 in words is "one billion, four hundred eighteen million, eight hundred twelve thousand, eight hundred sixty-one".