1183500138 has 16 divisors (see below), whose sum is σ = 2417362560. Its totient is φ = 386106336.

The previous prime is 1183500133. The next prime is 1183500161. The reversal of 1183500138 is 8310053811.

It is not an unprimeable number, because it can be changed into a prime (1183500133) 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, 2098123 + ... + 2098686.

It is an arithmetic number, because the mean of its divisors is an integer number (151085160).

Almost surely, 2^1183500138 is an apocalyptic number.

1183500138 is an abundant number, since it is smaller than the sum of its proper divisors (1233862422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1183500138 is a wasteful number, since it uses less digits than its factorization.

1183500138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196861.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1183500138 is about 34402.0368292344. The cubic root of 1183500138 is about 1057.7655965404.

Adding to 1183500138 its reverse (8310053811), we get a palindrome (9493553949).

The spelling of 1183500138 in words is "one billion, one hundred eighty-three million, five hundred thousand, one hundred thirty-eight".