188181468545 has 32 divisors (see below), whose sum is σ = 262007716608. Its totient is φ = 127074739968.

The previous prime is 188181468539. The next prime is 188181468593. The reversal of 188181468545 is 545864181881.

188181468545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 188181468545 - 2¹⁰ = 188181467521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9400487 + ... + 9420483.

It is an arithmetic number, because the mean of its divisors is an integer number (8187741144).

Almost surely, 2^188181468545 is an apocalyptic number.

It is an amenable number.

188181468545 is a deficient number, since it is larger than the sum of its proper divisors (73826248063).

188181468545 is a wasteful number, since it uses less digits than its factorization.

188181468545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24089.

The product of its digits is 9830400, while the sum is 59.

The spelling of 188181468545 in words is "one hundred eighty-eight billion, one hundred eighty-one million, four hundred sixty-eight thousand, five hundred forty-five".