1118810681604 has 1152 divisors, whose sum is σ = 4026051993600. Its totient is φ = 260620416000.

The previous prime is 1118810681567. The next prime is 1118810681609. The reversal of 1118810681604 is 4061860188111.

1118810681604 is a `hidden beast` number, since 11 + 18 + 8 + 10 + 6 + 8 + 1 + 604 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1118810681604.

It is not an unprimeable number, because it can be changed into a prime (1118810681609) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 6181274394 + ... + 6181274574.

It is an arithmetic number, because the mean of its divisors is an integer number (3494836800).

Almost surely, 2^{1118810681604} is an apocalyptic number.

1118810681604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118810681604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2013025996800).

1118810681604 is an abundant number, since it is smaller than the sum of its proper divisors (2907241311996).

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

1118810681604 is a wasteful number, since it uses less digits than its factorization.

1118810681604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The spelling of 1118810681604 in words is "one trillion, one hundred eighteen billion, eight hundred ten million, six hundred eighty-one thousand, six hundred four".