1418782328681 has 8 divisors (see below), whose sum is σ = 1453404141000. Its totient is φ = 1384161343360.

The previous prime is 1418782328633. The next prime is 1418782328713. The reversal of 1418782328681 is 1868232878141.

It can be written as a sum of positive squares in 4 ways, for example, as 24236262400 + 1394546066281 = 155680^2 + 1180909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1418782328681 - 2²² = 1418778134377 is a prime.

It is a super-2 number, since 2×1418782328681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1418782328681.

It is not an unprimeable number, because it can be changed into a prime (1418782328881) 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 in 7 ways as a sum of consecutive naturals, for example, 4630055 + ... + 4926963.

It is an arithmetic number, because the mean of its divisors is an integer number (181675517625).

Almost surely, 2^{1418782328681} is an apocalyptic number.

It is an amenable number.

1418782328681 is a deficient number, since it is larger than the sum of its proper divisors (34621812319).

1418782328681 is a wasteful number, since it uses less digits than its factorization.

1418782328681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413499.

The product of its digits is 8257536, while the sum is 59.

The spelling of 1418782328681 in words is "one trillion, four hundred eighteen billion, seven hundred eighty-two million, three hundred twenty-eight thousand, six hundred eighty-one".