18342299137 has 2 divisors, whose sum is σ = 18342299138. Its totient is φ = 18342299136.

The previous prime is 18342299071. The next prime is 18342299159. The reversal of 18342299137 is 73199224381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15217936321 + 3124362816 = 123361^2 + 55896^2 .

It is a cyclic number.

It is not a de Polignac number, because 18342299137 - 2³¹ = 16194815489 is a prime.

It is not a weakly prime, because it can be changed into another prime (18342299197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9171149568 + 9171149569.

It is an arithmetic number, because the mean of its divisors is an integer number (9171149569).

Almost surely, 2^18342299137 is an apocalyptic number.

It is an amenable number.

18342299137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18342299137 is an equidigital number, since it uses as much as digits as its factorization.

18342299137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The spelling of 18342299137 in words is "eighteen billion, three hundred forty-two million, two hundred ninety-nine thousand, one hundred thirty-seven".