11420194018 has 8 divisors (see below), whose sum is σ = 17130749148. Its totient is φ = 5709944304.

The previous prime is 11420194007. The next prime is 11420194061. The reversal of 11420194018 is 81049102411.

It can be written as a sum of positive squares in 2 ways, for example, as 11207821689 + 212372329 = 105867^2 + 14573^2 .

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

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, 87180 + ... + 174472.

Almost surely, 2^11420194018 is an apocalyptic number.

11420194018 is a deficient number, since it is larger than the sum of its proper divisors (5710555130).

11420194018 is an equidigital number, since it uses as much as digits as its factorization.

11420194018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152708.

The product of its (nonzero) digits is 2304, while the sum is 31.

Adding to 11420194018 its reverse (81049102411), we get a palindrome (92469296429).

The spelling of 11420194018 in words is "eleven billion, four hundred twenty million, one hundred ninety-four thousand, eighteen".