2918384872 has 32 divisors (see below), whose sum is σ = 5895235080. Its totient is φ = 1346411520.

The previous prime is 2918384851. The next prime is 2918384873. The reversal of 2918384872 is 2784838192.

It is a happy number.

2918384872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 547279236 + 2371105636 = 23394^2 + 48694^2 .

It is a super-2 number, since 2×2918384872² = 17033940522236912768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (2918384873) 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, 394972 + ... + 402292.

Almost surely, 2^2918384872 is an apocalyptic number.

It is an amenable number.

2918384872 is an abundant number, since it is smaller than the sum of its proper divisors (2976850208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2918384872 is a wasteful number, since it uses less digits than its factorization.

2918384872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173 (or 11169 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 2918384872 is about 54022.0776349818. The cubic root of 2918384872 is about 1429.0503209198.

The spelling of 2918384872 in words is "two billion, nine hundred eighteen million, three hundred eighty-four thousand, eight hundred seventy-two".