745170161 has 2 divisors, whose sum is σ = 745170162. Its totient is φ = 745170160.

The previous prime is 745170137. The next prime is 745170187. The reversal of 745170161 is 161071547.

745170161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566440000 + 178730161 = 23800^2 + 13369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745170161 is a prime.

It is not a weakly prime, because it can be changed into another prime (745170661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372585080 + 372585081.

It is an arithmetic number, because the mean of its divisors is an integer number (372585081).

Almost surely, 2^745170161 is an apocalyptic number.

It is an amenable number.

745170161 is a deficient number, since it is larger than the sum of its proper divisors (1).

745170161 is an equidigital number, since it uses as much as digits as its factorization.

745170161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 745170161 is about 27297.8050582826. The cubic root of 745170161 is about 906.6057837548.

The spelling of 745170161 in words is "seven hundred forty-five million, one hundred seventy thousand, one hundred sixty-one".