1123891685814 has 16 divisors (see below), whose sum is σ = 2278574925552. Its totient is φ = 369498636288.

The previous prime is 1123891685789. The next prime is 1123891685837. The reversal of 1123891685814 is 4185861983211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1282980939 + ... + 1282981814.

It is an arithmetic number, because the mean of its divisors is an integer number (142410932847).

Almost surely, 2^{1123891685814} is an apocalyptic number.

1123891685814 is an abundant number, since it is smaller than the sum of its proper divisors (1154683239738).

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

1123891685814 is a wasteful number, since it uses less digits than its factorization.

1123891685814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565962831.

The product of its digits is 3317760, while the sum is 57.

The spelling of 1123891685814 in words is "one trillion, one hundred twenty-three billion, eight hundred ninety-one million, six hundred eighty-five thousand, eight hundred fourteen".