11218380437 has 8 divisors (see below), whose sum is σ = 12239875872. Its totient is φ = 10197158800.

The previous prime is 11218380379. The next prime is 11218380449. The reversal of 11218380437 is 73408381211.

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

It is a cyclic number.

It is not a de Polignac number, because 11218380437 - 2¹² = 11218376341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11218380437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11218380487) 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, 22487 + ... + 151467.

It is an arithmetic number, because the mean of its divisors is an integer number (1529984484).

Almost surely, 2^11218380437 is an apocalyptic number.

It is an amenable number.

11218380437 is a deficient number, since it is larger than the sum of its proper divisors (1021495435).

11218380437 is a wasteful number, since it uses less digits than its factorization.

11218380437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136899.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 11218380437 in words is "eleven billion, two hundred eighteen million, three hundred eighty thousand, four hundred thirty-seven".