3967647271418 has 8 divisors (see below), whose sum is σ = 5951479755348. Its totient is φ = 1983820686304.

The previous prime is 3967647271391. The next prime is 3967647271421. The reversal of 3967647271418 is 8141727467693.

It can be written as a sum of positive squares in 2 ways, for example, as 3838358843929 + 129288427489 = 1959173^2 + 359567^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119680 + ... + 3031332.

Almost surely, 2^{3967647271418} is an apocalyptic number.

3967647271418 is a deficient number, since it is larger than the sum of its proper divisors (1983832483930).

3967647271418 is a wasteful number, since it uses less digits than its factorization.

3967647271418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949408.

The product of its digits is 85349376, while the sum is 65.

The spelling of 3967647271418 in words is "three trillion, nine hundred sixty-seven billion, six hundred forty-seven million, two hundred seventy-one thousand, four hundred eighteen".