1140311801988 has 96 divisors (see below), whose sum is σ = 3045152337920. Its totient is φ = 368805376800.

The previous prime is 1140311801921. The next prime is 1140311802011. The reversal of 1140311801988 is 8891081130411.

1140311801988 is a `hidden beast` number, since 1 + 140 + 311 + 8 + 0 + 198 + 8 = 666.

It is a super-5 number, since 5×1140311801988⁵ (a number of 61 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

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 31 ways as a sum of consecutive naturals, for example, 111820 + ... + 1514307.

Almost surely, 2^{1140311801988} is an apocalyptic number.

1140311801988 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 1140311801988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1522576168960).

1140311801988 is an abundant number, since it is smaller than the sum of its proper divisors (1904840535932).

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

1140311801988 is a wasteful number, since it uses less digits than its factorization.

1140311801988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626334 (or 1626326 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 45.

The spelling of 1140311801988 in words is "one trillion, one hundred forty billion, three hundred eleven million, eight hundred one thousand, nine hundred eighty-eight".