1118634381648 has 100 divisors (see below), whose sum is σ = 3700174250080. Its totient is φ = 319609820736.

The previous prime is 1118634381619. The next prime is 1118634381671. The reversal of 1118634381648 is 8461834368111.

1118634381648 is a `hidden beast` number, since 1 + 1 + 186 + 343 + 81 + 6 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1118634381594 and 1118634381603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61644058 + ... + 61662201.

Almost surely, 2^{1118634381648} is an apocalyptic number.

1118634381648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1118634381648 is an abundant number, since it is smaller than the sum of its proper divisors (2581539868432).

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

1118634381648 is a wasteful number, since it uses less digits than its factorization.

1118634381648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123306286 (or 123306271 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 1118634381648 in words is "one trillion, one hundred eighteen billion, six hundred thirty-four million, three hundred eighty-one thousand, six hundred forty-eight".