11381692638 has 8 divisors (see below), whose sum is σ = 22763385288. Its totient is φ = 3793897544.

The previous prime is 11381692583. The next prime is 11381692667. The reversal of 11381692638 is 83629618311.

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

11381692638 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 948474381 + ... + 948474392.

It is an arithmetic number, because the mean of its divisors is an integer number (2845423161).

Almost surely, 2^11381692638 is an apocalyptic number.

11381692638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11381692638 is a wasteful number, since it uses less digits than its factorization.

11381692638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896948778.

The product of its digits is 373248, while the sum is 48.

The spelling of 11381692638 in words is "eleven billion, three hundred eighty-one million, six hundred ninety-two thousand, six hundred thirty-eight".