7485537161 has 2 divisors, whose sum is σ = 7485537162. Its totient is φ = 7485537160.

The previous prime is 7485537139. The next prime is 7485537187. The reversal of 7485537161 is 1617355847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6347149561 + 1138387600 = 79669^2 + 33740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7485537161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7485537131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3742768580 + 3742768581.

It is an arithmetic number, because the mean of its divisors is an integer number (3742768581).

Almost surely, 2^7485537161 is an apocalyptic number.

It is an amenable number.

7485537161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7485537161 is an equidigital number, since it uses as much as digits as its factorization.

7485537161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 47.

The square root of 7485537161 is about 86518.9988441845. The cubic root of 7485537161 is about 1956.1747864858.

The spelling of 7485537161 in words is "seven billion, four hundred eighty-five million, five hundred thirty-seven thousand, one hundred sixty-one".