1018608361 has 4 divisors (see below), whose sum is σ = 1018928212. Its totient is φ = 1018288512.

The previous prime is 1018608343. The next prime is 1018608403. The reversal of 1018608361 is 1638068101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 866949136 + 151659225 = 29444^2 + 12315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1018608361 - 2⁷ = 1018608233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018603361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155100 + ... + 161533.

It is an arithmetic number, because the mean of its divisors is an integer number (254732053).

Almost surely, 2^1018608361 is an apocalyptic number.

It is an amenable number.

1018608361 is a deficient number, since it is larger than the sum of its proper divisors (319851).

1018608361 is an equidigital number, since it uses as much as digits as its factorization.

1018608361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319850.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1018608361 is about 31915.6444553451. The cubic root of 1018608361 is about 1006.1647053147.

The spelling of 1018608361 in words is "one billion, eighteen million, six hundred eight thousand, three hundred sixty-one".