185224554149 has 2 divisors, whose sum is σ = 185224554150. Its totient is φ = 185224554148.

The previous prime is 185224554133. The next prime is 185224554259. The reversal of 185224554149 is 941455422581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184034994049 + 1189560100 = 428993^2 + 34490^2 .

It is a cyclic number.

It is not a de Polignac number, because 185224554149 - 2⁴ = 185224554133 is a prime.

It is a super-2 number, since 2×185224554149² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 185224554097 and 185224554106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185224554049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92612277074 + 92612277075.

It is an arithmetic number, because the mean of its divisors is an integer number (92612277075).

Almost surely, 2^185224554149 is an apocalyptic number.

It is an amenable number.

185224554149 is a deficient number, since it is larger than the sum of its proper divisors (1).

185224554149 is an equidigital number, since it uses as much as digits as its factorization.

185224554149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304000, while the sum is 50.

The spelling of 185224554149 in words is "one hundred eighty-five billion, two hundred twenty-four million, five hundred fifty-four thousand, one hundred forty-nine".