185291460493 has 2 divisors, whose sum is σ = 185291460494. Its totient is φ = 185291460492.

The previous prime is 185291460461. The next prime is 185291460553. The reversal of 185291460493 is 394064192581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181972202724 + 3319257769 = 426582^2 + 57613^2 .

It is a cyclic number.

It is not a de Polignac number, because 185291460493 - 2⁵ = 185291460461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 185291460493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185291460293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92645730246 + 92645730247.

It is an arithmetic number, because the mean of its divisors is an integer number (92645730247).

Almost surely, 2^185291460493 is an apocalyptic number.

It is an amenable number.

185291460493 is a deficient number, since it is larger than the sum of its proper divisors (1).

185291460493 is an equidigital number, since it uses as much as digits as its factorization.

185291460493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 185291460493 in words is "one hundred eighty-five billion, two hundred ninety-one million, four hundred sixty thousand, four hundred ninety-three".