2018499306121 has 9 divisors (see below), whose sum is σ = 2090545520583. Its totient is φ = 1948856101080.

The previous prime is 2018499306041. The next prime is 2018499306127. The reversal of 2018499306121 is 1216039948102.

The square root of 2018499306121 is 1420739.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1058452073721 + 960047232400 = 1028811^2 + 979820^2 .

It is not a de Polignac number, because 2018499306121 - 2³³ = 2009909371529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018499306127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 41176936 + ... + 41225926.

Almost surely, 2^{2018499306121} is an apocalyptic number.

2018499306121 is the 1420739-th square number.

2018499306121 is the 710370-th centered octagonal number.

It is an amenable number.

2018499306121 is a deficient number, since it is larger than the sum of its proper divisors (72046214462).

2018499306121 is an frugal number, since it uses more digits than its factorization.

2018499306121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98040 (or 49020 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 2018499306121 in words is "two trillion, eighteen billion, four hundred ninety-nine million, three hundred six thousand, one hundred twenty-one".