3618158989 has 4 divisors (see below), whose sum is σ = 3618313660. Its totient is φ = 3618004320.

The previous prime is 3618158983. The next prime is 3618159001. The reversal of 3618158989 is 9898518163.

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 2697036489 + 921122500 = 51933^2 + 30350^2 .

It is a cyclic number.

It is not a de Polignac number, because 3618158989 - 2³ = 3618158981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3618158981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34242 + ... + 91699.

It is an arithmetic number, because the mean of its divisors is an integer number (904578415).

Almost surely, 2^3618158989 is an apocalyptic number.

It is an amenable number.

3618158989 is a deficient number, since it is larger than the sum of its proper divisors (154671).

3618158989 is a wasteful number, since it uses less digits than its factorization.

3618158989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154670.

The product of its digits is 3732480, while the sum is 58.

The square root of 3618158989 is about 60151.1345612034. The cubic root of 3618158989 is about 1535.1914708441.

The spelling of 3618158989 in words is "three billion, six hundred eighteen million, one hundred fifty-eight thousand, nine hundred eighty-nine".