1386815874 has 16 divisors (see below), whose sum is σ = 2774308320. Its totient is φ = 462159200.

The previous prime is 1386815869. The next prime is 1386815897. The reversal of 1386815874 is 4785186831.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742 + ... + 52670.

It is an arithmetic number, because the mean of its divisors is an integer number (173394270).

Almost surely, 2^1386815874 is an apocalyptic number.

1386815874 is an abundant number, since it is smaller than the sum of its proper divisors (1387492446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386815874 is a wasteful number, since it uses less digits than its factorization.

1386815874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56385.

The product of its digits is 1290240, while the sum is 51.

The square root of 1386815874 is about 37239.9768259863. The cubic root of 1386815874 is about 1115.1662092778.

The spelling of 1386815874 in words is "one billion, three hundred eighty-six million, eight hundred fifteen thousand, eight hundred seventy-four".