161846057 has 2 divisors, whose sum is σ = 161846058. Its totient is φ = 161846056.

The previous prime is 161846053. The next prime is 161846077. The reversal of 161846057 is 750648161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95570176 + 66275881 = 9776^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 161846057 - 2² = 161846053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161846057.

It is not a weakly prime, because it can be changed into another prime (161846053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80923028 + 80923029.

It is an arithmetic number, because the mean of its divisors is an integer number (80923029).

Almost surely, 2^161846057 is an apocalyptic number.

It is an amenable number.

161846057 is a deficient number, since it is larger than the sum of its proper divisors (1).

161846057 is an equidigital number, since it uses as much as digits as its factorization.

161846057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 161846057 is about 12721.8731718250. The cubic root of 161846057 is about 544.9634484366.

The spelling of 161846057 in words is "one hundred sixty-one million, eight hundred forty-six thousand, fifty-seven".