18630339049 has 81 divisors (see below), whose sum is σ = 24448745349. Its totient is φ = 14151594240.

The previous prime is 18630339029. The next prime is 18630339107. The reversal of 18630339049 is 94093303681.

The square root of 18630339049 is 136493.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8666306649 + 9964032400 = 93093^2 + 99820^2 .

It is not a de Polignac number, because 18630339049 - 2⁵ = 18630339017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18630339029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 503522659 + ... + 503522695.

Almost surely, 2^18630339049 is an apocalyptic number.

18630339049 is the 136493-rd square number.

18630339049 is the 68247-th centered octagonal number.

It is an amenable number.

18630339049 is a deficient number, since it is larger than the sum of its proper divisors (5818406300).

18630339049 is an equidigital number, since it uses as much as digits as its factorization.

18630339049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 18630339049 in words is "eighteen billion, six hundred thirty million, three hundred thirty-nine thousand, forty-nine".