1386842678 has 32 divisors (see below), whose sum is σ = 2271538080. Its totient is φ = 631192320.

The previous prime is 1386842657. The next prime is 1386842683. The reversal of 1386842678 is 8762486831.

It is a super-2 number, since 2×1386842678² = 3846665227044423368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357808 + ... + 1358828.

It is an arithmetic number, because the mean of its divisors is an integer number (70985565).

Almost surely, 2^1386842678 is an apocalyptic number.

1386842678 is a deficient number, since it is larger than the sum of its proper divisors (884695402).

1386842678 is a wasteful number, since it uses less digits than its factorization.

1386842678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712.

The product of its digits is 3096576, while the sum is 53.

The square root of 1386842678 is about 37240.3367063189. The cubic root of 1386842678 is about 1115.1733937745.

The spelling of 1386842678 in words is "one billion, three hundred eighty-six million, eight hundred forty-two thousand, six hundred seventy-eight".