184989481 has 6 divisors (see below), whose sum is σ = 187367082. Its totient is φ = 182641680.

The previous prime is 184989457. The next prime is 184989523.

184989481 is nontrivially palindromic in base 10.

184989481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 182493081 + 2496400 = 13509^2 + 1580^2 .

It is not a de Polignac number, because 184989481 - 2²³ = 176600873 is a prime.

It is a super-2 number, since 2×184989481² = 68442216161298722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (184989281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8580 + ... + 21061.

It is an arithmetic number, because the mean of its divisors is an integer number (31227847).

Almost surely, 2^184989481 is an apocalyptic number.

It is an amenable number.

184989481 is a deficient number, since it is larger than the sum of its proper divisors (2377601).

184989481 is an frugal number, since it uses more digits than its factorization.

184989481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29799 (or 29720 counting only the distinct ones).

The product of its digits is 663552, while the sum is 52.

The square root of 184989481 is about 13601.0838171081. The cubic root of 184989481 is about 569.7911217827.

The spelling of 184989481 in words is "one hundred eighty-four million, nine hundred eighty-nine thousand, four hundred eighty-one".