1387625026389 has 16 divisors (see below), whose sum is σ = 2187389205120. Its totient is φ = 765586221120.

The previous prime is 1387625026379. The next prime is 1387625026421. The reversal of 1387625026389 is 9836205267831.

It is not a de Polignac number, because 1387625026389 - 2⁴ = 1387625026373 is a prime.

It is a super-2 number, since 2×1387625026389² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387625026349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1139264602 + ... + 1139265819.

It is an arithmetic number, because the mean of its divisors is an integer number (136711825320).

Almost surely, 2^{1387625026389} is an apocalyptic number.

It is an amenable number.

1387625026389 is a deficient number, since it is larger than the sum of its proper divisors (799764178731).

1387625026389 is a wasteful number, since it uses less digits than its factorization.

1387625026389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278530460.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 1387625026389 in words is "one trillion, three hundred eighty-seven billion, six hundred twenty-five million, twenty-six thousand, three hundred eighty-nine".