186856243153 has 2 divisors, whose sum is σ = 186856243154. Its totient is φ = 186856243152.

The previous prime is 186856243073. The next prime is 186856243169. The reversal of 186856243153 is 351342658681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186782145489 + 74097664 = 432183^2 + 8608^2 .

It is a cyclic number.

It is not a de Polignac number, because 186856243153 - 2⁹ = 186856242641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 186856243153.

It is not a weakly prime, because it can be changed into another prime (186856243193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93428121576 + 93428121577.

It is an arithmetic number, because the mean of its divisors is an integer number (93428121577).

Almost surely, 2^186856243153 is an apocalyptic number.

It is an amenable number.

186856243153 is a deficient number, since it is larger than the sum of its proper divisors (1).

186856243153 is an equidigital number, since it uses as much as digits as its factorization.

186856243153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 52.

The spelling of 186856243153 in words is "one hundred eighty-six billion, eight hundred fifty-six million, two hundred forty-three thousand, one hundred fifty-three".