1389630023 has 2 divisors, whose sum is σ = 1389630024. Its totient is φ = 1389630022.

The previous prime is 1389630019. The next prime is 1389630029. The reversal of 1389630023 is 3200369831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1389630023 - 2² = 1389630019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389630029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694815011 + 694815012.

It is an arithmetic number, because the mean of its divisors is an integer number (694815012).

Almost surely, 2^1389630023 is an apocalyptic number.

1389630023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389630023 is an equidigital number, since it uses as much as digits as its factorization.

1389630023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1389630023 is about 37277.7416563826. The cubic root of 1389630023 is about 1115.9200040187.

Adding to 1389630023 its reverse (3200369831), we get a palindrome (4589999854).

The spelling of 1389630023 in words is "one billion, three hundred eighty-nine million, six hundred thirty thousand, twenty-three".