187968650693 has 2 divisors, whose sum is σ = 187968650694. Its totient is φ = 187968650692.

The previous prime is 187968650687. The next prime is 187968650707. The reversal of 187968650693 is 396056869781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161605608004 + 26363042689 = 402002^2 + 162367^2 .

It is a cyclic number.

It is not a de Polignac number, because 187968650693 - 2¹⁴ = 187968634309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187968640693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93984325346 + 93984325347.

It is an arithmetic number, because the mean of its divisors is an integer number (93984325347).

Almost surely, 2^187968650693 is an apocalyptic number.

It is an amenable number.

187968650693 is a deficient number, since it is larger than the sum of its proper divisors (1).

187968650693 is an equidigital number, since it uses as much as digits as its factorization.

187968650693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117573120, while the sum is 68.

The spelling of 187968650693 in words is "one hundred eighty-seven billion, nine hundred sixty-eight million, six hundred fifty thousand, six hundred ninety-three".