1389736063 has 4 divisors (see below), whose sum is σ = 1403495928. Its totient is φ = 1375976200.

The previous prime is 1389736003. The next prime is 1389736069. The reversal of 1389736063 is 3606379831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3606379831 = 101 ⋅35706731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1389736063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389736069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6879781 + ... + 6879982.

It is an arithmetic number, because the mean of its divisors is an integer number (350873982).

Almost surely, 2^1389736063 is an apocalyptic number.

1389736063 is a deficient number, since it is larger than the sum of its proper divisors (13759865).

1389736063 is a wasteful number, since it uses less digits than its factorization.

1389736063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13759864.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 1389736063 is about 37279.1639257106. The cubic root of 1389736063 is about 1115.9483878680.

The spelling of 1389736063 in words is "one billion, three hundred eighty-nine million, seven hundred thirty-six thousand, sixty-three".