185490350231 has 2 divisors, whose sum is σ = 185490350232. Its totient is φ = 185490350230.

The previous prime is 185490350137. The next prime is 185490350239. The reversal of 185490350231 is 132053094581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 185490350231 - 2¹⁸ = 185490088087 is a prime.

It is a super-2 number, since 2×185490350231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185490350239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92745175115 + 92745175116.

It is an arithmetic number, because the mean of its divisors is an integer number (92745175116).

Almost surely, 2^185490350231 is an apocalyptic number.

185490350231 is a deficient number, since it is larger than the sum of its proper divisors (1).

185490350231 is an equidigital number, since it uses as much as digits as its factorization.

185490350231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 185490350231 in words is "one hundred eighty-five billion, four hundred ninety million, three hundred fifty thousand, two hundred thirty-one".