1438018111 has 8 divisors (see below), whose sum is σ = 1493517824. Its totient is φ = 1383087960.

The previous prime is 1438018093. The next prime is 1438018177. The reversal of 1438018111 is 1118108341.

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 1438018111 - 2¹⁷ = 1437887039 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 1438018111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438018711) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 137241 + ... + 147346.

It is an arithmetic number, because the mean of its divisors is an integer number (186689728).

Almost surely, 2^1438018111 is an apocalyptic number.

1438018111 is a deficient number, since it is larger than the sum of its proper divisors (55499713).

1438018111 is a wasteful number, since it uses less digits than its factorization.

1438018111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284781.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 1438018111 is about 37921.2092502336. The cubic root of 1438018111 is about 1128.7249332046.

The spelling of 1438018111 in words is "one billion, four hundred thirty-eight million, eighteen thousand, one hundred eleven".