1111661116 has 24 divisors (see below), whose sum is σ = 2095478784. Its totient is φ = 514512240.

The previous prime is 1111661107. The next prime is 1111661149. The reversal of 1111661116 is 6111661111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192040 + ... + 197743.

It is an arithmetic number, because the mean of its divisors is an integer number (87311616).

Almost surely, 2^1111661116 is an apocalyptic number.

It is an amenable number.

1111661116 is a deficient number, since it is larger than the sum of its proper divisors (983817668).

1111661116 is a wasteful number, since it uses less digits than its factorization.

1111661116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389841 (or 389839 counting only the distinct ones).

The product of its digits is 216, while the sum is 25.

The square root of 1111661116 is about 33341.5823859636. The cubic root of 1111661116 is about 1035.9150397673.

The spelling of 1111661116 in words is "one billion, one hundred eleven million, six hundred sixty-one thousand, one hundred sixteen".