3918660213 has 16 divisors (see below), whose sum is σ = 5871438720. Its totient is φ = 2306635584.

The previous prime is 3918660197. The next prime is 3918660253. The reversal of 3918660213 is 3120668193.

It is not a de Polignac number, because 3918660213 - 2⁴ = 3918660197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918660253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2183418 + ... + 2185211.

It is an arithmetic number, because the mean of its divisors is an integer number (366964920).

Almost surely, 2^3918660213 is an apocalyptic number.

It is an amenable number.

3918660213 is a deficient number, since it is larger than the sum of its proper divisors (1952778507).

3918660213 is a wasteful number, since it uses less digits than its factorization.

3918660213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368668.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3918660213 is about 62599.2029741593. The cubic root of 3918660213 is about 1576.5673773579.

It can be divided in two parts, 39186 and 60213, that added together give a palindrome (99399).

The spelling of 3918660213 in words is "three billion, nine hundred eighteen million, six hundred sixty thousand, two hundred thirteen".