161247763 has 2 divisors, whose sum is σ = 161247764. Its totient is φ = 161247762.

The previous prime is 161247731. The next prime is 161247781. The reversal of 161247763 is 367742161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161247763 - 2⁵ = 161247731 is a prime.

It is not a weakly prime, because it can be changed into another prime (161247563) 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, 80623881 + 80623882.

It is an arithmetic number, because the mean of its divisors is an integer number (80623882).

Almost surely, 2^161247763 is an apocalyptic number.

161247763 is a deficient number, since it is larger than the sum of its proper divisors (1).

161247763 is an equidigital number, since it uses as much as digits as its factorization.

161247763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 161247763 is about 12698.3370171058. The cubic root of 161247763 is about 544.2910997436.

The spelling of 161247763 in words is "one hundred sixty-one million, two hundred forty-seven thousand, seven hundred sixty-three".