1166499999938 has 32 divisors (see below), whose sum is σ = 2153603496576. Its totient is φ = 461458591488.

The previous prime is 1166499999893. The next prime is 1166499999943. The reversal of 1166499999938 is 8399999946611.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7641770 + ... + 7792922.

It is an arithmetic number, because the mean of its divisors is an integer number (67300109268).

Almost surely, 2^{1166499999938} is an apocalyptic number.

1166499999938 is a deficient number, since it is larger than the sum of its proper divisors (987103496638).

1166499999938 is a wasteful number, since it uses less digits than its factorization.

1166499999938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193578.

The product of its digits is 1836660096, while the sum is 83.

The spelling of 1166499999938 in words is "one trillion, one hundred sixty-six billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred thirty-eight".