11181928385 has 8 divisors (see below), whose sum is σ = 13498664256. Its totient is φ = 8891975920.

The previous prime is 11181928369. The next prime is 11181928399. The reversal of 11181928385 is 58382918111.

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

It is not a de Polignac number, because 11181928385 - 2⁴ = 11181928369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6694931 + ... + 6696600.

It is an arithmetic number, because the mean of its divisors is an integer number (1687333032).

Almost surely, 2^11181928385 is an apocalyptic number.

It is an amenable number.

11181928385 is a deficient number, since it is larger than the sum of its proper divisors (2316735871).

11181928385 is a wasteful number, since it uses less digits than its factorization.

11181928385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391703.

The product of its digits is 138240, while the sum is 47.

The spelling of 11181928385 in words is "eleven billion, one hundred eighty-one million, nine hundred twenty-eight thousand, three hundred eighty-five".