1386878065 has 16 divisors (see below), whose sum is σ = 1677386880. Its totient is φ = 1100782720.

The previous prime is 1386878057. The next prime is 1386878069. The reversal of 1386878065 is 5608786831.

It is not a de Polignac number, because 1386878065 - 2³ = 1386878057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1386878069) 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 15 ways as a sum of consecutive naturals, for example, 351021 + ... + 354949.

It is an arithmetic number, because the mean of its divisors is an integer number (104836680).

Almost surely, 2^1386878065 is an apocalyptic number.

It is an amenable number.

1386878065 is a deficient number, since it is larger than the sum of its proper divisors (290508815).

1386878065 is a wasteful number, since it uses less digits than its factorization.

1386878065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 1386878065 is about 37240.8118198301. The cubic root of 1386878065 is about 1115.1828787017.

The spelling of 1386878065 in words is "one billion, three hundred eighty-six million, eight hundred seventy-eight thousand, sixty-five".