161982367 has 2 divisors, whose sum is σ = 161982368. Its totient is φ = 161982366.

The previous prime is 161982343. The next prime is 161982377. The reversal of 161982367 is 763289161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161982367 - 2¹¹ = 161980319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161982377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80991183 + 80991184.

It is an arithmetic number, because the mean of its divisors is an integer number (80991184).

Almost surely, 2^161982367 is an apocalyptic number.

161982367 is a deficient number, since it is larger than the sum of its proper divisors (1).

161982367 is an equidigital number, since it uses as much as digits as its factorization.

161982367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 161982367 is about 12727.2293528482. The cubic root of 161982367 is about 545.1163985595.

The spelling of 161982367 in words is "one hundred sixty-one million, nine hundred eighty-two thousand, three hundred sixty-seven".