1386351823 has 4 divisors (see below), whose sum is σ = 1386759088. Its totient is φ = 1385944560.

The previous prime is 1386351797. The next prime is 1386351829. The reversal of 1386351823 is 3281536831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3281536831 = 433 ⋅7578607.

It is a cyclic number.

It is not a de Polignac number, because 1386351823 - 2⁹ = 1386351311 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 (1386351829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198483 + ... + 205348.

It is an arithmetic number, because the mean of its divisors is an integer number (346689772).

Almost surely, 2^1386351823 is an apocalyptic number.

1386351823 is a deficient number, since it is larger than the sum of its proper divisors (407265).

1386351823 is an equidigital number, since it uses as much as digits as its factorization.

1386351823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407264.

The product of its digits is 103680, while the sum is 40.

The square root of 1386351823 is about 37233.7457556986. The cubic root of 1386351823 is about 1115.0418111906.

The spelling of 1386351823 in words is "one billion, three hundred eighty-six million, three hundred fifty-one thousand, eight hundred twenty-three".