2940581218 has 4 divisors (see below), whose sum is σ = 4410871830. Its totient is φ = 1470290608.

The previous prime is 2940581209. The next prime is 2940581219. The reversal of 2940581218 is 8121850492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2940567529 + 13689 = 54227^2 + 117^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2940581219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735145303 + ... + 735145306.

Almost surely, 2^2940581218 is an apocalyptic number.

2940581218 is a deficient number, since it is larger than the sum of its proper divisors (1470290612).

2940581218 is a wasteful number, since it uses less digits than its factorization.

2940581218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470290611.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 2940581218 is about 54227.1262192641. The cubic root of 2940581218 is about 1432.6641482092.

The spelling of 2940581218 in words is "two billion, nine hundred forty million, five hundred eighty-one thousand, two hundred eighteen".