2018187161 has 2 divisors, whose sum is σ = 2018187162. Its totient is φ = 2018187160.

The previous prime is 2018187139. The next prime is 2018187293. The reversal of 2018187161 is 1617818102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1234187161 + 784000000 = 35131^2 + 28000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2018187161 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 (2018187121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009093580 + 1009093581.

It is an arithmetic number, because the mean of its divisors is an integer number (1009093581).

Almost surely, 2^2018187161 is an apocalyptic number.

It is an amenable number.

2018187161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018187161 is an equidigital number, since it uses as much as digits as its factorization.

2018187161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 35.

The square root of 2018187161 is about 44924.2380124583. The cubic root of 2018187161 is about 1263.7285961996.

The spelling of 2018187161 in words is "two billion, eighteen million, one hundred eighty-seven thousand, one hundred sixty-one".