3807666643 has 8 divisors (see below), whose sum is σ = 4154342400. Its totient is φ = 3461078280.

The previous prime is 3807666637. The next prime is 3807666649. The reversal of 3807666643 is 3466667083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3807666637) and next prime (3807666649).

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

It is a de Polignac number, because none of the positive numbers 2^k-3807666643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3807666649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97746 + ... + 131032.

It is an arithmetic number, because the mean of its divisors is an integer number (519292800).

Almost surely, 2^3807666643 is an apocalyptic number.

3807666643 is a deficient number, since it is larger than the sum of its proper divisors (346675757).

3807666643 is a wasteful number, since it uses less digits than its factorization.

3807666643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43697.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The square root of 3807666643 is about 61706.2933824420. The cubic root of 3807666643 is about 1561.5394953343.

The spelling of 3807666643 in words is "three billion, eight hundred seven million, six hundred sixty-six thousand, six hundred forty-three".