1309947283806 has 64 divisors (see below), whose sum is σ = 3014450131968. Its totient is φ = 371741465088.

The previous prime is 1309947283763. The next prime is 1309947283817. The reversal of 1309947283806 is 6083827499031.

It is a self number, because there is not a number n which added to its sum of digits gives 1309947283806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4772991 + ... + 5039973.

It is an arithmetic number, because the mean of its divisors is an integer number (47100783312).

Almost surely, 2^{1309947283806} is an apocalyptic number.

1309947283806 is an abundant number, since it is smaller than the sum of its proper divisors (1704502848162).

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

1309947283806 is a wasteful number, since it uses less digits than its factorization.

1309947283806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267785.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 1309947283806 in words is "one trillion, three hundred nine billion, nine hundred forty-seven million, two hundred eighty-three thousand, eight hundred six".