1138540173 has 32 divisors (see below), whose sum is σ = 1658941440. Its totient is φ = 692141760.

The previous prime is 1138540163. The next prime is 1138540187. The reversal of 1138540173 is 3710458311.

It is not a de Polignac number, because 1138540173 - 2⁴ = 1138540157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138540163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159936 + ... + 166902.

It is an arithmetic number, because the mean of its divisors is an integer number (51841920).

Almost surely, 2^1138540173 is an apocalyptic number.

It is an amenable number.

1138540173 is a deficient number, since it is larger than the sum of its proper divisors (520401267).

1138540173 is a wasteful number, since it uses less digits than its factorization.

1138540173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7097.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1138540173 is about 33742.2609349166. The cubic root of 1138540173 is about 1044.1978300915.

Adding to 1138540173 its reverse (3710458311), we get a palindrome (4848998484).

The spelling of 1138540173 in words is "one billion, one hundred thirty-eight million, five hundred forty thousand, one hundred seventy-three".