1438117269 has 16 divisors (see below), whose sum is σ = 1943688960. Its totient is φ = 945697280.

The previous prime is 1438117267. The next prime is 1438117313. The reversal of 1438117269 is 9627118341.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1438117269 - 2¹ = 1438117267 is a prime.

It is a super-2 number, since 2×1438117269² = 4136362558792036722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1438117269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438117267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108829 + ... + 121325.

It is an arithmetic number, because the mean of its divisors is an integer number (121480560).

Almost surely, 2^1438117269 is an apocalyptic number.

It is an amenable number.

1438117269 is a deficient number, since it is larger than the sum of its proper divisors (505571691).

1438117269 is a wasteful number, since it uses less digits than its factorization.

1438117269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13020.

The product of its digits is 72576, while the sum is 42.

The square root of 1438117269 is about 37922.5166490833. The cubic root of 1438117269 is about 1128.7508762099.

The spelling of 1438117269 in words is "one billion, four hundred thirty-eight million, one hundred seventeen thousand, two hundred sixty-nine".