2981818 has 8 divisors (see below), whose sum is σ = 5111712. Its totient is φ = 1277916.

The previous prime is 2981779. The next prime is 2981819. The reversal of 2981818 is 8181892.

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

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

2981818 is a modest number, since divided by 1818 gives 298 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2981819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106480 + ... + 106507.

It is an arithmetic number, because the mean of its divisors is an integer number (638964).

2^2981818 is an apocalyptic number.

2981818 is a deficient number, since it is larger than the sum of its proper divisors (2129894).

2981818 is a wasteful number, since it uses less digits than its factorization.

2981818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212996.

The product of its digits is 9216, while the sum is 37.

The square root of 2981818 is about 1726.7941394387. The cubic root of 2981818 is about 143.9329999526.

It can be divided in two parts, 298 and 1818, that added together give a square (2116 = 46²).

The spelling of 2981818 in words is "two million, nine hundred eighty-one thousand, eight hundred eighteen".