18630772648 has 16 divisors (see below), whose sum is σ = 34960464000. Its totient is φ = 9307982256.

The previous prime is 18630772603. The next prime is 18630772663. The reversal of 18630772648 is 84627703681.

It is a super-2 number, since 2×18630772648² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18630772595 and 18630772604.

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 3 ways as a sum of consecutive naturals, for example, 914808 + ... + 934951.

It is an arithmetic number, because the mean of its divisors is an integer number (2185029000).

Almost surely, 2^18630772648 is an apocalyptic number.

It is an amenable number.

18630772648 is a deficient number, since it is larger than the sum of its proper divisors (16329691352).

18630772648 is a wasteful number, since it uses less digits than its factorization.

18630772648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851024 (or 1851020 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 18630772648 in words is "eighteen billion, six hundred thirty million, seven hundred seventy-two thousand, six hundred forty-eight".