1389036673476 has 27 divisors (see below), whose sum is σ = 3511193910861. Its totient is φ = 463009867344.

The previous prime is 1389036673471. The next prime is 1389036673511. The reversal of 1389036673476 is 6743766309831.

The square root of 1389036673476 is 1178574.

It is a perfect power (a square), and thus also a powerful number.

1389036673476 is a `hidden beast` number, since 1 + 3 + 8 + 90 + 3 + 6 + 6 + 73 + 476 = 666.

It can be written as a sum of positive squares in only one way, i.e., 521679731076 + 867356942400 = 722274^2 + 931320^2 .

It is a super-2 number, since 2×1389036673476² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1389036673471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6973230 + ... + 7169658.

Almost surely, 2^{1389036673476} is an apocalyptic number.

1389036673476 is the 1178574-th square number.

It is an amenable number.

1389036673476 is an abundant number, since it is smaller than the sum of its proper divisors (2122157237385).

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

1389036673476 is an frugal number, since it uses more digits than its factorization.

1389036673476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392868 (or 196434 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 63.

The spelling of 1389036673476 in words is "one trillion, three hundred eighty-nine billion, thirty-six million, six hundred seventy-three thousand, four hundred seventy-six".