722157193 has 2 divisors, whose sum is σ = 722157194. Its totient is φ = 722157192.

The previous prime is 722157181. The next prime is 722157199. The reversal of 722157193 is 391751227.

722157193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 699232249 + 22924944 = 26443^2 + 4788^2 .

It is a cyclic number.

It is not a de Polignac number, because 722157193 - 2⁹ = 722156681 is a prime.

It is a super-2 number, since 2×722157193² = 1043022022803278498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (722157199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361078596 + 361078597.

It is an arithmetic number, because the mean of its divisors is an integer number (361078597).

Almost surely, 2^722157193 is an apocalyptic number.

It is an amenable number.

722157193 is a deficient number, since it is larger than the sum of its proper divisors (1).

722157193 is an equidigital number, since it uses as much as digits as its factorization.

722157193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 722157193 is about 26872.9825847449. The cubic root of 722157193 is about 897.1751730425.

The spelling of 722157193 in words is "seven hundred twenty-two million, one hundred fifty-seven thousand, one hundred ninety-three".