187308808153 has 2 divisors, whose sum is σ = 187308808154. Its totient is φ = 187308808152.

The previous prime is 187308808123. The next prime is 187308808171. The reversal of 187308808153 is 351808803781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155526119424 + 31782688729 = 394368^2 + 178277^2 .

It is a cyclic number.

It is not a de Polignac number, because 187308808153 - 2⁹ = 187308807641 is a prime.

It is a super-2 number, since 2×187308808153² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 187308808153.

It is not a weakly prime, because it can be changed into another prime (187308808123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93654404076 + 93654404077.

It is an arithmetic number, because the mean of its divisors is an integer number (93654404077).

Almost surely, 2^187308808153 is an apocalyptic number.

It is an amenable number.

187308808153 is a deficient number, since it is larger than the sum of its proper divisors (1).

187308808153 is an equidigital number, since it uses as much as digits as its factorization.

187308808153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 187308808153 in words is "one hundred eighty-seven billion, three hundred eight million, eight hundred eight thousand, one hundred fifty-three".