2018959642765 has 8 divisors (see below), whose sum is σ = 2609117076888. Its totient is φ = 1490924043840.

The previous prime is 2018959642717. The next prime is 2018959642769. The reversal of 2018959642765 is 5672469598102.

It can be written as a sum of positive squares in 4 ways, for example, as 6301025641 + 2012658617124 = 79379^2 + 1418682^2 .

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

It is not a de Polignac number, because 2018959642765 - 2¹¹ = 2018959640717 is a prime.

It is a super-2 number, since 2×2018959642765² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2018959642697 and 2018959642706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018959642769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15530458726 + ... + 15530458855.

It is an arithmetic number, because the mean of its divisors is an integer number (326139634611).

Almost surely, 2^{2018959642765} is an apocalyptic number.

It is an amenable number.

2018959642765 is a deficient number, since it is larger than the sum of its proper divisors (590157434123).

2018959642765 is a wasteful number, since it uses less digits than its factorization.

2018959642765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31060917599.

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 2018959642765 in words is "two trillion, eighteen billion, nine hundred fifty-nine million, six hundred forty-two thousand, seven hundred sixty-five".