1386997367391 has 12 divisors (see below), whose sum is σ = 2068067759680. Its totient is φ = 894837011040.

The previous prime is 1386997367381. The next prime is 1386997367411. The reversal of 1386997367391 is 1937637996831.

1386997367391 is a `hidden beast` number, since 1 + 3 + 86 + 99 + 73 + 6 + 7 + 391 = 666.

It is not a de Polignac number, because 1386997367391 - 2¹¹ = 1386997365343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386997367381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2485658086 + ... + 2485658643.

Almost surely, 2^{1386997367391} is an apocalyptic number.

1386997367391 is a deficient number, since it is larger than the sum of its proper divisors (681070392289).

1386997367391 is a wasteful number, since it uses less digits than its factorization.

1386997367391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971316766 (or 4971316763 counting only the distinct ones).

The product of its digits is 277766496, while the sum is 72.

The spelling of 1386997367391 in words is "one trillion, three hundred eighty-six billion, nine hundred ninety-seven million, three hundred sixty-seven thousand, three hundred ninety-one".