18696049 has 2 divisors, whose sum is σ = 18696050. Its totient is φ = 18696048.

The previous prime is 18696023. The next prime is 18696053. The reversal of 18696049 is 94069681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 6411024 = 3505^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 18696049 - 2⁵ = 18696017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18695996 and 18696014.

It is not a weakly prime, because it can be changed into another prime (18696059) 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, 9348024 + 9348025.

It is an arithmetic number, because the mean of its divisors is an integer number (9348025).

Almost surely, 2^18696049 is an apocalyptic number.

It is an amenable number.

18696049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18696049 is an equidigital number, since it uses as much as digits as its factorization.

18696049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 18696049 is about 4323.8928062569. The cubic root of 18696049 is about 265.4095908786.

The spelling of 18696049 in words is "eighteen million, six hundred ninety-six thousand, forty-nine".