1386321264 has 40 divisors (see below), whose sum is σ = 3979256720. Its totient is φ = 462106944.

The previous prime is 1386321257. The next prime is 1386321283. The reversal of 1386321264 is 4621236831.

1386321264 is a `hidden beast` number, since 1 + 3 + 8 + 632 + 12 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1604107 + ... + 1604970.

It is an arithmetic number, because the mean of its divisors is an integer number (99481418).

Almost surely, 2^1386321264 is an apocalyptic number.

It is an amenable number.

1386321264 is an abundant number, since it is smaller than the sum of its proper divisors (2592935456).

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

1386321264 is a wasteful number, since it uses less digits than its factorization.

1386321264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209094 (or 3209082 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1386321264 is about 37233.3353864517. The cubic root of 1386321264 is about 1115.0336182695.

The spelling of 1386321264 in words is "one billion, three hundred eighty-six million, three hundred twenty-one thousand, two hundred sixty-four".