161636467 has 2 divisors, whose sum is σ = 161636468. Its totient is φ = 161636466.

The previous prime is 161636413. The next prime is 161636491. The reversal of 161636467 is 764636161.

It is a strong prime.

It is an emirp because it is prime and its reverse (764636161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161636467 is a prime.

It is a super-2 number, since 2×161636467² = 52252694928484178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161636407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80818233 + 80818234.

It is an arithmetic number, because the mean of its divisors is an integer number (80818234).

Almost surely, 2^161636467 is an apocalyptic number.

161636467 is a deficient number, since it is larger than the sum of its proper divisors (1).

161636467 is an equidigital number, since it uses as much as digits as its factorization.

161636467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 161636467 is about 12713.6331156755. The cubic root of 161636467 is about 544.7281049851.

It can be divided in two parts, 1616 and 36467, that added together give a palindrome (38083).

The spelling of 161636467 in words is "one hundred sixty-one million, six hundred thirty-six thousand, four hundred sixty-seven".