160726422649 has 9 divisors (see below), whose sum is σ = 174046681263. Its totient is φ = 148358040792.

The previous prime is 160726422631. The next prime is 160726422683. The reversal of 160726422649 is 946224627061.

The square root of 160726422649 is 400907.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23776098025 + 136950324624 = 154195^2 + 370068^2 .

It is a de Polignac number, because none of the positive numbers 2^k-160726422649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160726422149) 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 in 8 ways as a sum of consecutive naturals, for example, 5196372 + ... + 5227210.

Almost surely, 2^160726422649 is an apocalyptic number.

160726422649 is the 400907-th square number.

160726422649 is the 200454-th centered octagonal number.

It is an amenable number.

160726422649 is a deficient number, since it is larger than the sum of its proper divisors (13320258614).

160726422649 is an frugal number, since it uses more digits than its factorization.

160726422649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61704 (or 30852 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

Multiplying 160726422649 by its sum of digits (49), we get a square (7875594709801 = 2806349²).

The spelling of 160726422649 in words is "one hundred sixty billion, seven hundred twenty-six million, four hundred twenty-two thousand, six hundred forty-nine".