185161948529 has 2 divisors, whose sum is σ = 185161948530. Its totient is φ = 185161948528.

The previous prime is 185161948483. The next prime is 185161948537. The reversal of 185161948529 is 925849161581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175171546225 + 9990402304 = 418535^2 + 99952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185161948529 is a prime.

It is not a weakly prime, because it can be changed into another prime (185161948589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92580974264 + 92580974265.

It is an arithmetic number, because the mean of its divisors is an integer number (92580974265).

Almost surely, 2^185161948529 is an apocalyptic number.

It is an amenable number.

185161948529 is a deficient number, since it is larger than the sum of its proper divisors (1).

185161948529 is an equidigital number, since it uses as much as digits as its factorization.

185161948529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 59.

The spelling of 185161948529 in words is "one hundred eighty-five billion, one hundred sixty-one million, nine hundred forty-eight thousand, five hundred twenty-nine".