161748907 has 2 divisors, whose sum is σ = 161748908. Its totient is φ = 161748906.

The previous prime is 161748889. The next prime is 161748959. The reversal of 161748907 is 709847161.

161748907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (709847161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161748907 - 2¹⁹ = 161224619 is a prime.

It is not a weakly prime, because it can be changed into another prime (161748967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80874453 + 80874454.

It is an arithmetic number, because the mean of its divisors is an integer number (80874454).

Almost surely, 2^161748907 is an apocalyptic number.

161748907 is a deficient number, since it is larger than the sum of its proper divisors (1).

161748907 is an equidigital number, since it uses as much as digits as its factorization.

161748907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 161748907 is about 12718.0543716403. The cubic root of 161748907 is about 544.8543863711.

The spelling of 161748907 in words is "one hundred sixty-one million, seven hundred forty-eight thousand, nine hundred seven".