1387531034406 has 48 divisors (see below), whose sum is σ = 3385412978688. Its totient is φ = 406900594800.

The previous prime is 1387531034399. The next prime is 1387531034419. The reversal of 1387531034406 is 6044301357831.

1387531034406 is a `hidden beast` number, since 1 + 3 + 87 + 531 + 0 + 34 + 4 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113021806 + ... + 113034081.

It is an arithmetic number, because the mean of its divisors is an integer number (70529437056).

Almost surely, 2^{1387531034406} is an apocalyptic number.

1387531034406 is an abundant number, since it is smaller than the sum of its proper divisors (1997881944282).

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

1387531034406 is a wasteful number, since it uses less digits than its factorization.

1387531034406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226055937 (or 226055934 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 1387531034406 in words is "one trillion, three hundred eighty-seven billion, five hundred thirty-one million, thirty-four thousand, four hundred six".