1386445808 has 40 divisors (see below), whose sum is σ = 3084683520. Its totient is φ = 597032640.

The previous prime is 1386445799. The next prime is 1386445811. The reversal of 1386445808 is 8085446831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203960 + ... + 210647.

It is an arithmetic number, because the mean of its divisors is an integer number (77117088).

Almost surely, 2^1386445808 is an apocalyptic number.

It is an amenable number.

1386445808 is an abundant number, since it is smaller than the sum of its proper divisors (1698237712).

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

1386445808 is a wasteful number, since it uses less digits than its factorization.

1386445808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414645 (or 414639 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The square root of 1386445808 is about 37235.0078286550. The cubic root of 1386445808 is about 1115.0670079780.

The spelling of 1386445808 in words is "one billion, three hundred eighty-six million, four hundred forty-five thousand, eight hundred eight".