187848974365973 has 2 divisors, whose sum is σ = 187848974365974. Its totient is φ = 187848974365972.

The previous prime is 187848974365891. The next prime is 187848974365981. The reversal of 187848974365973 is 379563479848781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113692041046609 + 74156933319364 = 10662647^2 + 8611442^2 .

It is a cyclic number.

It is not a de Polignac number, because 187848974365973 - 2²⁴ = 187848957588757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187848971365973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93924487182986 + 93924487182987.

It is an arithmetic number, because the mean of its divisors is an integer number (93924487182987).

Almost surely, 2^{187848974365973} is an apocalyptic number.

It is an amenable number.

187848974365973 is a deficient number, since it is larger than the sum of its proper divisors (1).

187848974365973 is an equidigital number, since it uses as much as digits as its factorization.

187848974365973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61451550720, while the sum is 89.

The spelling of 187848974365973 in words is "one hundred eighty-seven trillion, eight hundred forty-eight billion, nine hundred seventy-four million, three hundred sixty-five thousand, nine hundred seventy-three".