1389137203 has 2 divisors, whose sum is σ = 1389137204. Its totient is φ = 1389137202.

The previous prime is 1389137173. The next prime is 1389137273. The reversal of 1389137203 is 3027319831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1389137203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1389137273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694568601 + 694568602.

It is an arithmetic number, because the mean of its divisors is an integer number (694568602).

Almost surely, 2^1389137203 is an apocalyptic number.

1389137203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389137203 is an equidigital number, since it uses as much as digits as its factorization.

1389137203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1389137203 is about 37271.1309594973. The cubic root of 1389137203 is about 1115.7880713672.

The spelling of 1389137203 in words is "one billion, three hundred eighty-nine million, one hundred thirty-seven thousand, two hundred three".