3667212818 has 4 divisors (see below), whose sum is σ = 5500819230. Its totient is φ = 1833606408.

The previous prime is 3667212811. The next prime is 3667212839. The reversal of 3667212818 is 8182127663.

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., 3664244089 + 2968729 = 60533^2 + 1723^2 .

It is a super-2 number, since 2×3667212818² = 26896899705007002248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3667212811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 916803203 + ... + 916803206.

Almost surely, 2^3667212818 is an apocalyptic number.

3667212818 is a deficient number, since it is larger than the sum of its proper divisors (1833606412).

3667212818 is a wasteful number, since it uses less digits than its factorization.

3667212818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833606411.

The product of its digits is 193536, while the sum is 44.

The square root of 3667212818 is about 60557.5166102442. The cubic root of 3667212818 is about 1542.0982274894.

The spelling of 3667212818 in words is "three billion, six hundred sixty-seven million, two hundred twelve thousand, eight hundred eighteen".