161841703 has 2 divisors, whose sum is σ = 161841704. Its totient is φ = 161841702.

The previous prime is 161841697. The next prime is 161841707. The reversal of 161841703 is 307148161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161841703 - 2⁵ = 161841671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161841707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80920851 + 80920852.

It is an arithmetic number, because the mean of its divisors is an integer number (80920852).

Almost surely, 2^161841703 is an apocalyptic number.

161841703 is a deficient number, since it is larger than the sum of its proper divisors (1).

161841703 is an equidigital number, since it uses as much as digits as its factorization.

161841703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 161841703 is about 12721.7020480752. The cubic root of 161841703 is about 544.9585615044.

Adding to 161841703 its reverse (307148161), we get a palindrome (468989864).

The spelling of 161841703 in words is "one hundred sixty-one million, eight hundred forty-one thousand, seven hundred three".