3918949347 has 18 divisors (see below), whose sum is σ = 5345758668. Its totient is φ = 2553719808.

The previous prime is 3918949343. The next prime is 3918949381. The reversal of 3918949347 is 7439498193.

It is not a de Polignac number, because 3918949347 - 2² = 3918949343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3918949343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5095779 + ... + 5096547.

Almost surely, 2^3918949347 is an apocalyptic number.

3918949347 is a deficient number, since it is larger than the sum of its proper divisors (1426809321).

3918949347 is an frugal number, since it uses more digits than its factorization.

3918949347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 819 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 57.

The square root of 3918949347 is about 62601.5123379619. The cubic root of 3918949347 is about 1576.6061514964.

The spelling of 3918949347 in words is "three billion, nine hundred eighteen million, nine hundred forty-nine thousand, three hundred forty-seven".