1389013143 has 16 divisors (see below), whose sum is σ = 2159788800. Its totient is φ = 793721208.

The previous prime is 1389013123. The next prime is 1389013147. The reversal of 1389013143 is 3413109831.

It is not a de Polignac number, because 1389013143 - 2¹⁸ = 1388750999 is a prime.

It is a super-2 number, since 2×1389013143² = 3858715022853476898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389013147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673905 + ... + 675962.

It is an arithmetic number, because the mean of its divisors is an integer number (134986800).

Almost surely, 2^1389013143 is an apocalyptic number.

1389013143 is a deficient number, since it is larger than the sum of its proper divisors (770775657).

1389013143 is an equidigital number, since it uses as much as digits as its factorization.

1389013143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349891 (or 1349877 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1389013143 is about 37269.4666315471. The cubic root of 1389013143 is about 1115.7548543966.

The spelling of 1389013143 in words is "one billion, three hundred eighty-nine million, thirteen thousand, one hundred forty-three".