519371389 has 2 divisors, whose sum is σ = 519371390. Its totient is φ = 519371388.

The previous prime is 519371387. The next prime is 519371443. The reversal of 519371389 is 983173915.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427786489 + 91584900 = 20683^2 + 9570^2 .

It is a cyclic number.

It is not a de Polignac number, because 519371389 - 2¹ = 519371387 is a prime.

Together with 519371387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (519371381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259685694 + 259685695.

It is an arithmetic number, because the mean of its divisors is an integer number (259685695).

Almost surely, 2^519371389 is an apocalyptic number.

It is an amenable number.

519371389 is a deficient number, since it is larger than the sum of its proper divisors (1).

519371389 is an equidigital number, since it uses as much as digits as its factorization.

519371389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 46.

The square root of 519371389 is about 22789.7211259813. The cubic root of 519371389 is about 803.8209861301.

The spelling of 519371389 in words is "five hundred nineteen million, three hundred seventy-one thousand, three hundred eighty-nine".