3948274591385 has 16 divisors (see below), whose sum is σ = 4785702154752. Its totient is φ = 3126919723200.

The previous prime is 3948274591381. The next prime is 3948274591421. The reversal of 3948274591385 is 5831954728493.

It is not a de Polignac number, because 3948274591385 - 2² = 3948274591381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948274591381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9067061 + ... + 9492530.

It is an arithmetic number, because the mean of its divisors is an integer number (299106384672).

Almost surely, 2^{3948274591385} is an apocalyptic number.

It is an amenable number.

3948274591385 is a deficient number, since it is larger than the sum of its proper divisors (837427563367).

3948274591385 is a wasteful number, since it uses less digits than its factorization.

3948274591385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18560024.

The product of its digits is 261273600, while the sum is 68.

The spelling of 3948274591385 in words is "three trillion, nine hundred forty-eight billion, two hundred seventy-four million, five hundred ninety-one thousand, three hundred eighty-five".