11381631838 has 8 divisors (see below), whose sum is σ = 17072939520. Its totient is φ = 5690652000.

The previous prime is 11381631829. The next prime is 11381631841. The reversal of 11381631838 is 83813618311.

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

It is a junction number, because it is equal to n+sod(n) for n = 11381631794 and 11381631803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42838 + ... + 156838.

It is an arithmetic number, because the mean of its divisors is an integer number (2134117440).

Almost surely, 2^11381631838 is an apocalyptic number.

11381631838 is a deficient number, since it is larger than the sum of its proper divisors (5691307682).

11381631838 is a wasteful number, since it uses less digits than its factorization.

11381631838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163922.

The product of its digits is 82944, while the sum is 43.

The spelling of 11381631838 in words is "eleven billion, three hundred eighty-one million, six hundred thirty-one thousand, eight hundred thirty-eight".