185474849 has 10 divisors (see below), whose sum is σ = 216377250. Its totient is φ = 158976384.

The previous prime is 185474833. The next prime is 185474897. The reversal of 185474849 is 948474581.

It can be written as a sum of positive squares in only one way, i.e., 96040000 + 89434849 = 9800^2 + 9457^2 .

It is not a de Polignac number, because 185474849 - 2⁴ = 185474833 is a prime.

It is a super-2 number, since 2×185474849² = 68801839223145602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 185474797 and 185474806.

It is not an unprimeable number, because it can be changed into a prime (185474899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 36224 + ... + 41025.

It is an arithmetic number, because the mean of its divisors is an integer number (21637725).

Almost surely, 2^185474849 is an apocalyptic number.

It is an amenable number.

185474849 is a deficient number, since it is larger than the sum of its proper divisors (30902401).

185474849 is an frugal number, since it uses more digits than its factorization.

185474849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77277 (or 77256 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 185474849 is about 13618.9151183198. The cubic root of 185474849 is about 570.2890182998.

The spelling of 185474849 in words is "one hundred eighty-five million, four hundred seventy-four thousand, eight hundred forty-nine".