11928213194 has 4 divisors (see below), whose sum is σ = 17892319794. Its totient is φ = 5964106596.

The previous prime is 11928213173. The next prime is 11928213197. The reversal of 11928213194 is 49131282911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10698799225 + 1229413969 = 103435^2 + 35063^2 .

It is not an unprimeable number, because it can be changed into a prime (11928213197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2982053297 + ... + 2982053300.

Almost surely, 2^11928213194 is an apocalyptic number.

11928213194 is a deficient number, since it is larger than the sum of its proper divisors (5964106600).

11928213194 is an equidigital number, since it uses as much as digits as its factorization.

11928213194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964106599.

The product of its digits is 31104, while the sum is 41.

The spelling of 11928213194 in words is "eleven billion, nine hundred twenty-eight million, two hundred thirteen thousand, one hundred ninety-four".