745157161 has 12 divisors (see below), whose sum is σ = 867284868. Its totient is φ = 638360352.

The previous prime is 745157159. The next prime is 745157221. The reversal of 745157161 is 161751547.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 487747225 + 257409936 = 22085^2 + 16044^2 .

It is not a de Polignac number, because 745157161 - 2¹ = 745157159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745157161.

It is not an unprimeable number, because it can be changed into a prime (745155161) 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 in 11 ways as a sum of consecutive naturals, for example, 134335 + ... + 139771.

It is an arithmetic number, because the mean of its divisors is an integer number (72273739).

Almost surely, 2^745157161 is an apocalyptic number.

It is an amenable number.

745157161 is a deficient number, since it is larger than the sum of its proper divisors (122127707).

745157161 is a wasteful number, since it uses less digits than its factorization.

745157161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8241 counting only the distinct ones).

The product of its digits is 29400, while the sum is 37.

The square root of 745157161 is about 27297.5669428614. The cubic root of 745157161 is about 906.6005116061.

The spelling of 745157161 in words is "seven hundred forty-five million, one hundred fifty-seven thousand, one hundred sixty-one".