11488185138 has 32 divisors (see below), whose sum is σ = 23097045312. Its totient is φ = 3809318400.

The previous prime is 11488185131. The next prime is 11488185143. The reversal of 11488185138 is 83158188411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11488185131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1489873 + ... + 1497563.

It is an arithmetic number, because the mean of its divisors is an integer number (721782666).

Almost surely, 2^11488185138 is an apocalyptic number.

11488185138 is an abundant number, since it is smaller than the sum of its proper divisors (11608860174).

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

11488185138 is a wasteful number, since it uses less digits than its factorization.

11488185138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970.

The product of its digits is 245760, while the sum is 48.

The spelling of 11488185138 in words is "eleven billion, four hundred eighty-eight million, one hundred eighty-five thousand, one hundred thirty-eight".