2118484731 has 8 divisors (see below), whose sum is σ = 3081432384. Its totient is φ = 1283930120.

The previous prime is 2118484717. The next prime is 2118484763. The reversal of 2118484731 is 1374848112.

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

It is not a de Polignac number, because 2118484731 - 2¹⁴ = 2118468347 is a prime.

It is a super-2 number, since 2×2118484731² = 8975955110960284722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2118484731.

It is not an unprimeable number, because it can be changed into a prime (2118484931) 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, 32098221 + ... + 32098286.

It is an arithmetic number, because the mean of its divisors is an integer number (385179048).

Almost surely, 2^2118484731 is an apocalyptic number.

2118484731 is a deficient number, since it is larger than the sum of its proper divisors (962947653).

2118484731 is a wasteful number, since it uses less digits than its factorization.

2118484731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64196521.

The product of its digits is 43008, while the sum is 39.

The square root of 2118484731 is about 46027.0000217264. Note that the first 4 decimals coincide. The cubic root of 2118484731 is about 1284.3255214735.

The spelling of 2118484731 in words is "two billion, one hundred eighteen million, four hundred eighty-four thousand, seven hundred thirty-one".