3917971026958 has 4 divisors (see below), whose sum is σ = 5876956540440. Its totient is φ = 1958985513478.

The previous prime is 3917971026917. The next prime is 3917971026967. The reversal of 3917971026958 is 8596201797193.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3917971026893 and 3917971026902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979492756738 + ... + 979492756741.

It is an arithmetic number, because the mean of its divisors is an integer number (1469239135110).

Almost surely, 2^{3917971026958} is an apocalyptic number.

3917971026958 is a deficient number, since it is larger than the sum of its proper divisors (1958985513482).

3917971026958 is a wasteful number, since it uses less digits than its factorization.

3917971026958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958985513481.

The product of its (nonzero) digits is 51438240, while the sum is 67.

The spelling of 3917971026958 in words is "three trillion, nine hundred seventeen billion, nine hundred seventy-one million, twenty-six thousand, nine hundred fifty-eight".