161914847 has 2 divisors, whose sum is σ = 161914848. Its totient is φ = 161914846.

The previous prime is 161914799. The next prime is 161914897. The reversal of 161914847 is 748419161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161914847 - 2¹⁰ = 161913823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161914897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80957423 + 80957424.

It is an arithmetic number, because the mean of its divisors is an integer number (80957424).

Almost surely, 2^161914847 is an apocalyptic number.

161914847 is a deficient number, since it is larger than the sum of its proper divisors (1).

161914847 is an equidigital number, since it uses as much as digits as its factorization.

161914847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 161914847 is about 12724.5764958996. The cubic root of 161914847 is about 545.0406467454.

The spelling of 161914847 in words is "one hundred sixty-one million, nine hundred fourteen thousand, eight hundred forty-seven".