186856240229 has 2 divisors, whose sum is σ = 186856240230. Its totient is φ = 186856240228.

The previous prime is 186856240217. The next prime is 186856240271. The reversal of 186856240229 is 922042658681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170570652004 + 16285588225 = 413002^2 + 127615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-186856240229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (186856243229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93428120114 + 93428120115.

It is an arithmetic number, because the mean of its divisors is an integer number (93428120115).

Almost surely, 2^186856240229 is an apocalyptic number.

It is an amenable number.

186856240229 is a deficient number, since it is larger than the sum of its proper divisors (1).

186856240229 is an equidigital number, since it uses as much as digits as its factorization.

186856240229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 186856240229 in words is "one hundred eighty-six billion, eight hundred fifty-six million, two hundred forty thousand, two hundred twenty-nine".