161938367 has 2 divisors, whose sum is σ = 161938368. Its totient is φ = 161938366.

The previous prime is 161938313. The next prime is 161938369. The reversal of 161938367 is 763839161.

It is a strong prime.

It is an emirp because it is prime and its reverse (763839161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161938367 - 2²⁰ = 160889791 is a prime.

Together with 161938369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161938369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80969183 + 80969184.

It is an arithmetic number, because the mean of its divisors is an integer number (80969184).

Almost surely, 2^161938367 is an apocalyptic number.

161938367 is a deficient number, since it is larger than the sum of its proper divisors (1).

161938367 is an equidigital number, since it uses as much as digits as its factorization.

161938367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 161938367 is about 12725.5006581274. The cubic root of 161938367 is about 545.0670366155.

The spelling of 161938367 in words is "one hundred sixty-one million, nine hundred thirty-eight thousand, three hundred sixty-seven".