1386351647 has 4 divisors (see below), whose sum is σ = 1396934616. Its totient is φ = 1375768680.

The previous prime is 1386351643. The next prime is 1386351653. The reversal of 1386351647 is 7461536831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7461536831 = 7 ⋅1065933833.

It is a cyclic number.

It is not a de Polignac number, because 1386351647 - 2² = 1386351643 is a prime.

It is a super-2 number, since 2×1386351647² = 3843941778279225218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386351598 and 1386351607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386351643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5291288 + ... + 5291549.

It is an arithmetic number, because the mean of its divisors is an integer number (349233654).

Almost surely, 2^1386351647 is an apocalyptic number.

1386351647 is a deficient number, since it is larger than the sum of its proper divisors (10582969).

1386351647 is a wasteful number, since it uses less digits than its factorization.

1386351647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10582968.

The product of its digits is 362880, while the sum is 44.

The square root of 1386351647 is about 37233.7433922511. The cubic root of 1386351647 is about 1115.0417640050.

The spelling of 1386351647 in words is "one billion, three hundred eighty-six million, three hundred fifty-one thousand, six hundred forty-seven".