1326385386 has 24 divisors (see below), whose sum is σ = 2874626820. Its totient is φ = 442006656.

The previous prime is 1326385363. The next prime is 1326385391. The reversal of 1326385386 is 6835836231.

1326385386 is a `hidden beast` number, since 1 + 3 + 2 + 638 + 5 + 3 + 8 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1252098225 + 74287161 = 35385^2 + 8619^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77410 + ... + 92978.

Almost surely, 2^1326385386 is an apocalyptic number.

1326385386 is an abundant number, since it is smaller than the sum of its proper divisors (1548241434).

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

1326385386 is a wasteful number, since it uses less digits than its factorization.

1326385386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310 (or 20307 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 1326385386 is about 36419.5742149740. The cubic root of 1326385386 is about 1098.7272844920.

The spelling of 1326385386 in words is "one billion, three hundred twenty-six million, three hundred eighty-five thousand, three hundred eighty-six".