1386551261842 has 8 divisors (see below), whose sum is σ = 2079832045500. Its totient is φ = 693273913344.

The previous prime is 1386551261807. The next prime is 1386551261867. The reversal of 1386551261842 is 2481621556831.

It can be written as a sum of positive squares in 2 ways, for example, as 1074437975601 + 312113286241 = 1036551^2 + 558671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1386551261842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762334 + ... + 1831462.

Almost surely, 2^{1386551261842} is an apocalyptic number.

1386551261842 is a deficient number, since it is larger than the sum of its proper divisors (693280783658).

1386551261842 is a wasteful number, since it uses less digits than its factorization.

1386551261842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717580.

The product of its digits is 2764800, while the sum is 52.

The spelling of 1386551261842 in words is "one trillion, three hundred eighty-six billion, five hundred fifty-one million, two hundred sixty-one thousand, eight hundred forty-two".