3549333818 has 4 divisors (see below), whose sum is σ = 5324000730. Its totient is φ = 1774666908.

The previous prime is 3549333811. The next prime is 3549333841. The reversal of 3549333818 is 8183339453.

3549333818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8183339453 = 17 ⋅481372909.

It can be written as a sum of positive squares in only one way, i.e., 3493637449 + 55696369 = 59107^2 + 7463^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3549333811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887333453 + ... + 887333456.

Almost surely, 2^3549333818 is an apocalyptic number.

3549333818 is a deficient number, since it is larger than the sum of its proper divisors (1774666912).

3549333818 is a wasteful number, since it uses less digits than its factorization.

3549333818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774666911.

The product of its digits is 933120, while the sum is 47.

The square root of 3549333818 is about 59576.2857016112. The cubic root of 3549333818 is about 1525.3948730030.

The spelling of 3549333818 in words is "three billion, five hundred forty-nine million, three hundred thirty-three thousand, eight hundred eighteen".