2945818 has 4 divisors (see below), whose sum is σ = 4418730. Its totient is φ = 1472908.

The previous prime is 2945807. The next prime is 2945851. The reversal of 2945818 is 8185492.

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., 2934369 + 11449 = 1713^2 + 107^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736453 + ... + 736456.

2^2945818 is an apocalyptic number.

2945818 is a deficient number, since it is larger than the sum of its proper divisors (1472912).

2945818 is a wasteful number, since it uses less digits than its factorization.

2945818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472911.

The product of its digits is 23040, while the sum is 37.

The square root of 2945818 is about 1716.3385446933. The cubic root of 2945818 is about 143.3514104957.

The spelling of 2945818 in words is "two million, nine hundred forty-five thousand, eight hundred eighteen".