1386664508 has 6 divisors (see below), whose sum is σ = 2426662896. Its totient is φ = 693332252.

The previous prime is 1386664507. The next prime is 1386664511. The reversal of 1386664508 is 8054666831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386664507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173333060 + ... + 173333067.

It is an arithmetic number, because the mean of its divisors is an integer number (404443816).

Almost surely, 2^1386664508 is an apocalyptic number.

It is an amenable number.

1386664508 is a deficient number, since it is larger than the sum of its proper divisors (1039998388).

1386664508 is a wasteful number, since it uses less digits than its factorization.

1386664508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346666131 (or 346666129 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 1386664508 is about 37237.9444652897. The cubic root of 1386664508 is about 1115.1256356652.

The spelling of 1386664508 in words is "one billion, three hundred eighty-six million, six hundred sixty-four thousand, five hundred eight".