1389561319 has 2 divisors, whose sum is σ = 1389561320. Its totient is φ = 1389561318.

The previous prime is 1389561287. The next prime is 1389561337. The reversal of 1389561319 is 9131659831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1389561319 - 2⁵ = 1389561287 is a prime.

It is a super-2 number, since 2×1389561319² = 3861761318522039522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389561379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694780659 + 694780660.

It is an arithmetic number, because the mean of its divisors is an integer number (694780660).

Almost surely, 2^1389561319 is an apocalyptic number.

1389561319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389561319 is an equidigital number, since it uses as much as digits as its factorization.

1389561319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 46.

The square root of 1389561319 is about 37276.8201299413. The cubic root of 1389561319 is about 1115.9016131688.

The spelling of 1389561319 in words is "one billion, three hundred eighty-nine million, five hundred sixty-one thousand, three hundred nineteen".