161692411 has 2 divisors, whose sum is σ = 161692412. Its totient is φ = 161692410.

The previous prime is 161692409. The next prime is 161692477. The reversal of 161692411 is 114296161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161692411 - 2¹ = 161692409 is a prime.

It is a super-2 number, since 2×161692411² = 52288871549985842, which contains 22 as substring.

Together with 161692409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (161692481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80846205 + 80846206.

It is an arithmetic number, because the mean of its divisors is an integer number (80846206).

Almost surely, 2^161692411 is an apocalyptic number.

161692411 is a deficient number, since it is larger than the sum of its proper divisors (1).

161692411 is an equidigital number, since it uses as much as digits as its factorization.

161692411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 31.

The square root of 161692411 is about 12715.8330832077. The cubic root of 161692411 is about 544.7909430202.

The spelling of 161692411 in words is "one hundred sixty-one million, six hundred ninety-two thousand, four hundred eleven".