3918323849 has 8 divisors (see below), whose sum is σ = 4499510880. Its totient is φ = 3374632800.

The previous prime is 3918323813. The next prime is 3918323869. The reversal of 3918323849 is 9483238193.

It is a happy number.

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

It is not a de Polignac number, because 3918323849 - 2²⁸ = 3649888393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3918323797 and 3918323806.

It is not an unprimeable number, because it can be changed into a prime (3918323869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9373772 + ... + 9374189.

It is an arithmetic number, because the mean of its divisors is an integer number (562438860).

Almost surely, 2^3918323849 is an apocalyptic number.

It is an amenable number.

3918323849 is a deficient number, since it is larger than the sum of its proper divisors (581187031).

3918323849 is a wasteful number, since it uses less digits than its factorization.

3918323849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18747991.

The product of its digits is 1119744, while the sum is 50.

The square root of 3918323849 is about 62596.5162688787. The cubic root of 3918323849 is about 1576.5222670690.

The spelling of 3918323849 in words is "three billion, nine hundred eighteen million, three hundred twenty-three thousand, eight hundred forty-nine".