1111784511942 has 32 divisors (see below), whose sum is σ = 2660680884960. Its totient is φ = 342087541920.

The previous prime is 1111784511931. The next prime is 1111784511949. The reversal of 1111784511942 is 2491154871111.

1111784511942 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 7 + 8 + 451 + 194 + 2 = 666.

It is a super-2 number, since 2×1111784511942² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111784511949) 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 15 ways as a sum of consecutive naturals, for example, 791868609 + ... + 791870012.

It is an arithmetic number, because the mean of its divisors is an integer number (83146277655).

Almost surely, 2^{1111784511942} is an apocalyptic number.

1111784511942 is an abundant number, since it is smaller than the sum of its proper divisors (1548896373018).

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

1111784511942 is a wasteful number, since it uses less digits than its factorization.

1111784511942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583738645 (or 1583738639 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The spelling of 1111784511942 in words is "one trillion, one hundred eleven billion, seven hundred eighty-four million, five hundred eleven thousand, nine hundred forty-two".