18957529 has 2 divisors, whose sum is σ = 18957530. Its totient is φ = 18957528.

The previous prime is 18957527. The next prime is 18957541. The reversal of 18957529 is 92575981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18045504 + 912025 = 4248^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 18957529 - 2¹ = 18957527 is a prime.

Together with 18957527, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18957527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9478764 + 9478765.

It is an arithmetic number, because the mean of its divisors is an integer number (9478765).

Almost surely, 2^18957529 is an apocalyptic number.

It is an amenable number.

18957529 is a deficient number, since it is larger than the sum of its proper divisors (1).

18957529 is an equidigital number, since it uses as much as digits as its factorization.

18957529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 46.

The square root of 18957529 is about 4354.0244601977. The cubic root of 18957529 is about 266.6411925319.

The spelling of 18957529 in words is "eighteen million, nine hundred fifty-seven thousand, five hundred twenty-nine".