184540989 has 8 divisors (see below), whose sum is σ = 246127392. Its totient is φ = 122990960.

The previous prime is 184540969. The next prime is 184540991. The reversal of 184540989 is 989045481.

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 184540989 - 2¹³ = 184532797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184540969) 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, 6634 + ... + 20324.

It is an arithmetic number, because the mean of its divisors is an integer number (30765924).

Almost surely, 2^184540989 is an apocalyptic number.

It is an amenable number.

184540989 is a deficient number, since it is larger than the sum of its proper divisors (61586403).

184540989 is a wasteful number, since it uses less digits than its factorization.

184540989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 184540989 is about 13584.5864493550. The cubic root of 184540989 is about 569.3302783616.

The spelling of 184540989 in words is "one hundred eighty-four million, five hundred forty thousand, nine hundred eighty-nine".