11338187381 has 8 divisors (see below), whose sum is σ = 11452611000. Its totient is φ = 11223806400.

The previous prime is 11338187351. The next prime is 11338187423. The reversal of 11338187381 is 18378183311.

11338187381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2200548100 + 9137639281 = 46910^2 + 95591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11338187381 - 2⁶ = 11338187317 is a prime.

It is a super-2 number, since 2×11338187381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11338187321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011395 + ... + 1022543.

It is an arithmetic number, because the mean of its divisors is an integer number (1431576375).

Almost surely, 2^11338187381 is an apocalyptic number.

It is an amenable number.

11338187381 is a deficient number, since it is larger than the sum of its proper divisors (114423619).

11338187381 is a wasteful number, since it uses less digits than its factorization.

11338187381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21319.

The product of its digits is 96768, while the sum is 44.

The spelling of 11338187381 in words is "eleven billion, three hundred thirty-eight million, one hundred eighty-seven thousand, three hundred eighty-one".