1618808986368 has 432 divisors, whose sum is σ = 5601904788480. Its totient is φ = 456652505088.

The previous prime is 1618808986363. The next prime is 1618808986397. The reversal of 1618808986368 is 8636898088161.

1618808986368 is a `hidden beast` number, since 1 + 6 + 188 + 0 + 8 + 9 + 86 + 368 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1618808986296 and 1618808986305.

It is not an unprimeable number, because it can be changed into a prime (1618808986363) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 34377496 + ... + 34424552.

Almost surely, 2^{1618808986368} is an apocalyptic number.

1618808986368 is a gapful number since it is divisible by the number (18) 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 1618808986368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800952394240).

1618808986368 is an abundant number, since it is smaller than the sum of its proper divisors (3983095802112).

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

1618808986368 is an frugal number, since it uses more digits than its factorization.

1618808986368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47174 (or 47148 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 72.

The spelling of 1618808986368 in words is "one trillion, six hundred eighteen billion, eight hundred eight million, nine hundred eighty-six thousand, three hundred sixty-eight".