161149427 has 2 divisors, whose sum is σ = 161149428. Its totient is φ = 161149426.

The previous prime is 161149399. The next prime is 161149447. The reversal of 161149427 is 724941161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161149427 - 2¹² = 161145331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161149447) 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, 80574713 + 80574714.

It is an arithmetic number, because the mean of its divisors is an integer number (80574714).

Almost surely, 2^161149427 is an apocalyptic number.

161149427 is a deficient number, since it is larger than the sum of its proper divisors (1).

161149427 is an equidigital number, since it uses as much as digits as its factorization.

161149427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 161149427 is about 12694.4644235194. The cubic root of 161149427 is about 544.1804330020.

The spelling of 161149427 in words is "one hundred sixty-one million, one hundred forty-nine thousand, four hundred twenty-seven".