184742738989 has 8 divisors (see below), whose sum is σ = 184942881720. Its totient is φ = 184542656256.

The previous prime is 184742738927. The next prime is 184742738993. The reversal of 184742738989 is 989837247481.

It can be written as a sum of positive squares in 4 ways, for example, as 2655340900 + 182087398089 = 51530^2 + 426717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 184742738989 - 2³⁷ = 47303785517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184722738989) 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, 8867617 + ... + 8888425.

It is an arithmetic number, because the mean of its divisors is an integer number (23117860215).

Almost surely, 2^184742738989 is an apocalyptic number.

It is an amenable number.

184742738989 is a deficient number, since it is larger than the sum of its proper divisors (200142731).

184742738989 is a wasteful number, since it uses less digits than its factorization.

184742738989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29999.

The product of its digits is 195084288, while the sum is 70.

The spelling of 184742738989 in words is "one hundred eighty-four billion, seven hundred forty-two million, seven hundred thirty-eight thousand, nine hundred eighty-nine".