1138071869 has 8 divisors (see below), whose sum is σ = 1243768608. Its totient is φ = 1032747760.

The previous prime is 1138071859. The next prime is 1138071871. The reversal of 1138071869 is 9681708311.

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

It is not a de Polignac number, because 1138071869 - 2²⁸ = 869636413 is a prime.

It is a super-2 number, since 2×1138071869² = 2590415158018306322, 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 (1138071829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86747 + ... + 99000.

It is an arithmetic number, because the mean of its divisors is an integer number (155471076).

Almost surely, 2^1138071869 is an apocalyptic number.

It is an amenable number.

1138071869 is a deficient number, since it is larger than the sum of its proper divisors (105696739).

1138071869 is a wasteful number, since it uses less digits than its factorization.

1138071869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186315.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1138071869 is about 33735.3207929019. The cubic root of 1138071869 is about 1044.0546440793.

The spelling of 1138071869 in words is "one billion, one hundred thirty-eight million, seventy-one thousand, eight hundred sixty-nine".