1389026252651 has 8 divisors (see below), whose sum is σ = 1391783621280. Its totient is φ = 1386271594368.

The previous prime is 1389026252633. The next prime is 1389026252671. The reversal of 1389026252651 is 1562526209831.

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

It is a cyclic number.

It is not a de Polignac number, because 1389026252651 - 2²⁶ = 1388959143787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389026252651.

It is not an unprimeable number, because it can be changed into a prime (1389026252671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349955 + ... + 1703091.

It is an arithmetic number, because the mean of its divisors is an integer number (173972952660).

Almost surely, 2^{1389026252651} is an apocalyptic number.

1389026252651 is a deficient number, since it is larger than the sum of its proper divisors (2757368629).

1389026252651 is a wasteful number, since it uses less digits than its factorization.

1389026252651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355173.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1389026252651 in words is "one trillion, three hundred eighty-nine billion, twenty-six million, two hundred fifty-two thousand, six hundred fifty-one".