1389761529 has 12 divisors (see below), whose sum is σ = 2006520336. Its totient is φ = 855237552.

The previous prime is 1389761501. The next prime is 1389761533. The reversal of 1389761529 is 9251679831.

It is not a de Polignac number, because 1389761529 - 2²⁷ = 1255543801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1389761539) 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 11 ways as a sum of consecutive naturals, for example, 1370067 + ... + 1371080.

It is an arithmetic number, because the mean of its divisors is an integer number (167210028).

Almost surely, 2^1389761529 is an apocalyptic number.

It is an amenable number.

1389761529 is a deficient number, since it is larger than the sum of its proper divisors (616758807).

1389761529 is a wasteful number, since it uses less digits than its factorization.

1389761529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741176 (or 2741163 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 1389761529 is about 37279.5054822351. The cubic root of 1389761529 is about 1115.9552041667.

The spelling of 1389761529 in words is "one billion, three hundred eighty-nine million, seven hundred sixty-one thousand, five hundred twenty-nine".