1110618791881 has 9 divisors (see below), whose sum is σ = 1115652515719. Its totient is φ = 1105607692336.

The previous prime is 1110618791819. The next prime is 1110618791999. The reversal of 1110618791881 is 1881978160111.

The square root of 1110618791881 is 1053859.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 225544257225 + 885074534656 = 474915^2 + 940784^2 .

It is not a de Polignac number, because 1110618791881 - 2⁹ = 1110618791369 is a prime.

It is a super-2 number, since 2×1110618791881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110618791081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 245546886 + ... + 245551408.

Almost surely, 2^{1110618791881} is an apocalyptic number.

1110618791881 is the 1053859-th square number.

1110618791881 is the 526930-th centered octagonal number.

It is an amenable number.

1110618791881 is a deficient number, since it is larger than the sum of its proper divisors (5033723838).

1110618791881 is an frugal number, since it uses more digits than its factorization.

1110618791881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512 (or 4756 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 52.

The spelling of 1110618791881 in words is "one trillion, one hundred ten billion, six hundred eighteen million, seven hundred ninety-one thousand, eight hundred eighty-one".