1138577069 has 4 divisors (see below), whose sum is σ = 1301230944. Its totient is φ = 975923196.

The previous prime is 1138577003. The next prime is 1138577081. The reversal of 1138577069 is 9607758311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9607758311 = 24077 ⋅399043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138577069 is a prime.

It is a super-2 number, since 2×1138577069² = 2592715484105261522, 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 (1138577369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81326927 + ... + 81326940.

It is an arithmetic number, because the mean of its divisors is an integer number (325307736).

Almost surely, 2^1138577069 is an apocalyptic number.

It is an amenable number.

1138577069 is a deficient number, since it is larger than the sum of its proper divisors (162653875).

1138577069 is an equidigital number, since it uses as much as digits as its factorization.

1138577069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162653874.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1138577069 is about 33742.8076632636. The cubic root of 1138577069 is about 1044.2091095375.

The spelling of 1138577069 in words is "one billion, one hundred thirty-eight million, five hundred seventy-seven thousand, sixty-nine".