18613640248 has 32 divisors (see below), whose sum is σ = 41173032960. Its totient is φ = 7719942240.

The previous prime is 18613640233. The next prime is 18613640257. The reversal of 18613640248 is 84204631681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5359336 + ... + 5362807.

It is an arithmetic number, because the mean of its divisors is an integer number (1286657280).

Almost surely, 2^18613640248 is an apocalyptic number.

It is an amenable number.

18613640248 is an abundant number, since it is smaller than the sum of its proper divisors (22559392712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18613640248 is a wasteful number, since it uses less digits than its factorization.

18613640248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722187 (or 10722183 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 18613640248 in words is "eighteen billion, six hundred thirteen million, six hundred forty thousand, two hundred forty-eight".