1138742269 has 8 divisors (see below), whose sum is σ = 1303455168. Its totient is φ = 974538240.

The previous prime is 1138742239. The next prime is 1138742281. The reversal of 1138742269 is 9622478311.

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 1138742269 - 2⁵ = 1138742237 is a prime.

It is a super-2 number, since 2×1138742269² = 2593467910414536722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138742239) 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, 122407 + ... + 131380.

It is an arithmetic number, because the mean of its divisors is an integer number (162931896).

Almost surely, 2^1138742269 is an apocalyptic number.

It is an amenable number.

1138742269 is a deficient number, since it is larger than the sum of its proper divisors (164712899).

1138742269 is an equidigital number, since it uses as much as digits as its factorization.

1138742269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254435.

The product of its digits is 145152, while the sum is 43.

The square root of 1138742269 is about 33745.2555035519. The cubic root of 1138742269 is about 1044.2596097063.

The spelling of 1138742269 in words is "one billion, one hundred thirty-eight million, seven hundred forty-two thousand, two hundred sixty-nine".