11218389387 has 8 divisors (see below), whose sum is σ = 15211375680. Its totient is φ = 7352164680.

The previous prime is 11218389367. The next prime is 11218389409. The reversal of 11218389387 is 78398381211.

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

It is not a de Polignac number, because 11218389387 - 2²⁶ = 11151280523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11218389367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31690189 + ... + 31690542.

It is an arithmetic number, because the mean of its divisors is an integer number (1901421960).

Almost surely, 2^11218389387 is an apocalyptic number.

11218389387 is a deficient number, since it is larger than the sum of its proper divisors (3992986293).

11218389387 is an equidigital number, since it uses as much as digits as its factorization.

11218389387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63380793.

The product of its digits is 580608, while the sum is 51.

The spelling of 11218389387 in words is "eleven billion, two hundred eighteen million, three hundred eighty-nine thousand, three hundred eighty-seven".