11838137838 has 16 divisors (see below), whose sum is σ = 23692746240. Its totient is φ = 3943300856.

The previous prime is 11838137771. The next prime is 11838137863. The reversal of 11838137838 is 83873183811.

It is a Curzon 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, 676920 + ... + 694187.

It is an arithmetic number, because the mean of its divisors is an integer number (1480796640).

Almost surely, 2^11838137838 is an apocalyptic number.

11838137838 is an abundant number, since it is smaller than the sum of its proper divisors (11854608402).

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

11838137838 is a wasteful number, since it uses less digits than its factorization.

11838137838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372551.

The product of its digits is 774144, while the sum is 51.

The spelling of 11838137838 in words is "eleven billion, eight hundred thirty-eight million, one hundred thirty-seven thousand, eight hundred thirty-eight".