18034649 has 2 divisors, whose sum is σ = 18034650. Its totient is φ = 18034648.

The previous prime is 18034633. The next prime is 18034663. The reversal of 18034649 is 94643081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12652249 + 5382400 = 3557^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 18034649 - 2⁴ = 18034633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18034619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9017324 + 9017325.

It is an arithmetic number, because the mean of its divisors is an integer number (9017325).

Almost surely, 2^18034649 is an apocalyptic number.

It is an amenable number.

18034649 is a deficient number, since it is larger than the sum of its proper divisors (1).

18034649 is an equidigital number, since it uses as much as digits as its factorization.

18034649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18034649 is about 4246.7221477276. The cubic root of 18034649 is about 262.2421910232.

The spelling of 18034649 in words is "eighteen million, thirty-four thousand, six hundred forty-nine".