11894018361 has 4 divisors (see below), whose sum is σ = 15858691152. Its totient is φ = 7929345572.

The previous prime is 11894018347. The next prime is 11894018371. The reversal of 11894018361 is 16381049811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11894018361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11894018371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982336391 + ... + 1982336396.

It is an arithmetic number, because the mean of its divisors is an integer number (3964672788).

Almost surely, 2^11894018361 is an apocalyptic number.

It is an amenable number.

11894018361 is a deficient number, since it is larger than the sum of its proper divisors (3964672791).

11894018361 is an equidigital number, since it uses as much as digits as its factorization.

11894018361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964672790.

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 11894018361 in words is "eleven billion, eight hundred ninety-four million, eighteen thousand, three hundred sixty-one".