185530307049 has 6 divisors (see below), whose sum is σ = 267988221306. Its totient is φ = 123686871360.

The previous prime is 185530306979. The next prime is 185530307069. The reversal of 185530307049 is 940703035581.

185530307049 is a `hidden beast` number, since 1 + 8 + 5 + 530 + 3 + 0 + 70 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 175785655824 + 9744651225 = 419268^2 + 98715^2 .

It is not a de Polignac number, because 185530307049 - 2¹⁷ = 185530175977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185530306995 and 185530307013.

It is not an unprimeable number, because it can be changed into a prime (185530307069) 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, 10307239272 + ... + 10307239289.

It is an arithmetic number, because the mean of its divisors is an integer number (44664703551).

Almost surely, 2^185530307049 is an apocalyptic number.

It is an amenable number.

185530307049 is a deficient number, since it is larger than the sum of its proper divisors (82457914257).

185530307049 is a wasteful number, since it uses less digits than its factorization.

185530307049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614478567 (or 20614478564 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 185530307049 in words is "one hundred eighty-five billion, five hundred thirty million, three hundred seven thousand, forty-nine".