18294649 has 2 divisors, whose sum is σ = 18294650. Its totient is φ = 18294648.

The previous prime is 18294629. The next prime is 18294659. The reversal of 18294649 is 94649281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18003049 + 291600 = 4243^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 18294649 - 2⁹ = 18294137 is a prime.

It is not a weakly prime, because it can be changed into another prime (18294629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9147324 + 9147325.

It is an arithmetic number, because the mean of its divisors is an integer number (9147325).

Almost surely, 2^18294649 is an apocalyptic number.

It is an amenable number.

18294649 is a deficient number, since it is larger than the sum of its proper divisors (1).

18294649 is an equidigital number, since it uses as much as digits as its factorization.

18294649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 18294649 is about 4277.2244505053. The cubic root of 18294649 is about 263.4964047196.

The spelling of 18294649 in words is "eighteen million, two hundred ninety-four thousand, six hundred forty-nine".