12901519 has 2 divisors, whose sum is σ = 12901520. Its totient is φ = 12901518.

The previous prime is 12901517. The next prime is 12901541. The reversal of 12901519 is 91510921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12901519 - 2¹ = 12901517 is a prime.

It is a super-2 number, since 2×12901519² = 332898385014722, which contains 22 as substring.

Together with 12901517, 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 (12901517) 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, 6450759 + 6450760.

It is an arithmetic number, because the mean of its divisors is an integer number (6450760).

Almost surely, 2^12901519 is an apocalyptic number.

12901519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12901519 is an equidigital number, since it uses as much as digits as its factorization.

12901519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 12901519 is about 3591.8684552751. The cubic root of 12901519 is about 234.5382149415.

It can be divided in two parts, 1290 and 1519, that added together give a square (2809 = 53²).

The spelling of 12901519 in words is "twelve million, nine hundred one thousand, five hundred nineteen".