2118947941 has 8 divisors (see below), whose sum is σ = 2315095200. Its totient is φ = 1923386640.

The previous prime is 2118947939. The next prime is 2118947951. The reversal of 2118947941 is 1497498112.

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 2118947941 - 2¹ = 2118947939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2118947891 and 2118947900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118947921) 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, 138906 + ... + 153403.

It is an arithmetic number, because the mean of its divisors is an integer number (289386900).

Almost surely, 2^2118947941 is an apocalyptic number.

It is an amenable number.

2118947941 is a deficient number, since it is larger than the sum of its proper divisors (196147259).

2118947941 is a wasteful number, since it uses less digits than its factorization.

2118947941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292979.

The product of its digits is 145152, while the sum is 46.

The square root of 2118947941 is about 46032.0316844695. The cubic root of 2118947941 is about 1284.4191212466.

It can be divided in two parts, 2118 and 947941, that added together give a palindrome (950059).

The spelling of 2118947941 in words is "two billion, one hundred eighteen million, nine hundred forty-seven thousand, nine hundred forty-one".