188231234009 has 16 divisors (see below), whose sum is σ = 231691380480. Its totient is φ = 148915955520.

The previous prime is 188231233999. The next prime is 188231234017. The reversal of 188231234009 is 900432132881.

It is a cyclic number.

It is not a de Polignac number, because 188231234009 - 2¹⁶ = 188231168473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188231234089) 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, 913844 + ... + 1100714.

It is an arithmetic number, because the mean of its divisors is an integer number (14480711280).

Almost surely, 2^188231234009 is an apocalyptic number.

It is an amenable number.

188231234009 is a deficient number, since it is larger than the sum of its proper divisors (43460146471).

188231234009 is a wasteful number, since it uses less digits than its factorization.

188231234009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197960.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 188231234009 in words is "one hundred eighty-eight billion, two hundred thirty-one million, two hundred thirty-four thousand, nine".