163472761 has 2 divisors, whose sum is σ = 163472762. Its totient is φ = 163472760.

The previous prime is 163472689. The next prime is 163472783. The reversal of 163472761 is 167274361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108993600 + 54479161 = 10440^2 + 7381^2 .

It is a cyclic number.

It is not a de Polignac number, because 163472761 - 2⁷ = 163472633 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 163472761.

It is not a weakly prime, because it can be changed into another prime (163472861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81736380 + 81736381.

It is an arithmetic number, because the mean of its divisors is an integer number (81736381).

Almost surely, 2^163472761 is an apocalyptic number.

It is an amenable number.

163472761 is a deficient number, since it is larger than the sum of its proper divisors (1).

163472761 is an equidigital number, since it uses as much as digits as its factorization.

163472761 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 163472761 is about 12785.6466789913. The cubic root of 163472761 is about 546.7831625529.

The spelling of 163472761 in words is "one hundred sixty-three million, four hundred seventy-two thousand, seven hundred sixty-one".