18649236348 has 18 divisors (see below), whose sum is σ = 47141125304. Its totient is φ = 6216412104.

The previous prime is 18649236311. The next prime is 18649236367. The reversal of 18649236348 is 84363294681.

18649236348 is a `hidden beast` number, since 1 + 8 + 64 + 9 + 236 + 348 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 18649236294 and 18649236303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259017136 + ... + 259017207.

Almost surely, 2^18649236348 is an apocalyptic number.

18649236348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18649236348 is an abundant number, since it is smaller than the sum of its proper divisors (28491888956).

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

18649236348 is a wasteful number, since it uses less digits than its factorization.

18649236348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518034353 (or 518034348 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 18649236348 in words is "eighteen billion, six hundred forty-nine million, two hundred thirty-six thousand, three hundred forty-eight".