1389026252594 has 16 divisors (see below), whose sum is σ = 2179603387800. Its totient is φ = 663029963904.

The previous prime is 1389026252533. The next prime is 1389026252599. The reversal of 1389026252594 is 4952526209831.

It can be written as a sum of positive squares in 4 ways, for example, as 507708976369 + 881317276225 = 712537^2 + 938785^2 .

It is not an unprimeable number, because it can be changed into a prime (1389026252599) 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 7 ways as a sum of consecutive naturals, for example, 134538257 + ... + 134548580.

Almost surely, 2^{1389026252594} is an apocalyptic number.

1389026252594 is a deficient number, since it is larger than the sum of its proper divisors (790577135206).

1389026252594 is a wasteful number, since it uses less digits than its factorization.

1389026252594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269086957.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 1389026252594 in words is "one trillion, three hundred eighty-nine billion, twenty-six million, two hundred fifty-two thousand, five hundred ninety-four".