168290293837 has 2 divisors, whose sum is σ = 168290293838. Its totient is φ = 168290293836.

The previous prime is 168290293771. The next prime is 168290293861. The reversal of 168290293837 is 738392092861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167551867561 + 738426276 = 409331^2 + 27174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168290293837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168290393837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84145146918 + 84145146919.

It is an arithmetic number, because the mean of its divisors is an integer number (84145146919).

Almost surely, 2^168290293837 is an apocalyptic number.

It is an amenable number.

168290293837 is a deficient number, since it is larger than the sum of its proper divisors (1).

168290293837 is an equidigital number, since it uses as much as digits as its factorization.

168290293837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 168290293837 in words is "one hundred sixty-eight billion, two hundred ninety million, two hundred ninety-three thousand, eight hundred thirty-seven".