11394787238 has 4 divisors (see below), whose sum is σ = 17092180860. Its totient is φ = 5697393618.

The previous prime is 11394787189. The next prime is 11394787249. The reversal of 11394787238 is 83278749311.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11394787238.

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 as a sum of consecutive naturals, namely, 2848696808 + ... + 2848696811.

It is an arithmetic number, because the mean of its divisors is an integer number (4273045215).

Almost surely, 2^11394787238 is an apocalyptic number.

11394787238 is a deficient number, since it is larger than the sum of its proper divisors (5697393622).

11394787238 is an equidigital number, since it uses as much as digits as its factorization.

11394787238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697393621.

The product of its digits is 2032128, while the sum is 53.

The spelling of 11394787238 in words is "eleven billion, three hundred ninety-four million, seven hundred eighty-seven thousand, two hundred thirty-eight".