11134781838 has 12 divisors (see below), whose sum is σ = 24125360688. Its totient is φ = 3711593940.

The previous prime is 11134781809. The next prime is 11134781843. The reversal of 11134781838 is 83818743111.

It is a junction number, because it is equal to n+sod(n) for n = 11134781793 and 11134781802.

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 5 ways as a sum of consecutive naturals, for example, 309299478 + ... + 309299513.

It is an arithmetic number, because the mean of its divisors is an integer number (2010446724).

Almost surely, 2^11134781838 is an apocalyptic number.

11134781838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11134781838 is an abundant number, since it is smaller than the sum of its proper divisors (12990578850).

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

11134781838 is a wasteful number, since it uses less digits than its factorization.

11134781838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618598999 (or 618598996 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 11134781838 in words is "eleven billion, one hundred thirty-four million, seven hundred eighty-one thousand, eight hundred thirty-eight".