18301603349 has 2 divisors, whose sum is σ = 18301603350. Its totient is φ = 18301603348.

The previous prime is 18301603337. The next prime is 18301603361. The reversal of 18301603349 is 94330610381.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (18301603337) and next prime (18301603361).

It can be written as a sum of positive squares in only one way, i.e., 10566400849 + 7735202500 = 102793^2 + 87950^2 .

It is a cyclic number.

It is not a de Polignac number, because 18301603349 - 2⁸ = 18301603093 is a prime.

It is a super-3 number, since 3×18301603349³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18301609349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150801674 + 9150801675.

It is an arithmetic number, because the mean of its divisors is an integer number (9150801675).

Almost surely, 2^18301603349 is an apocalyptic number.

It is an amenable number.

18301603349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18301603349 is an equidigital number, since it uses as much as digits as its factorization.

18301603349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 18301603349 in words is "eighteen billion, three hundred one million, six hundred three thousand, three hundred forty-nine".