3618863873 has 4 divisors (see below), whose sum is σ = 3643151700. Its totient is φ = 3594576048.

The previous prime is 3618863869. The next prime is 3618863881. The reversal of 3618863873 is 3783688163.

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 2324879089 + 1293984784 = 48217^2 + 35972^2 .

It is a cyclic number.

It is not a de Polignac number, because 3618863873 - 2² = 3618863869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3618863813) 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, 12143690 + ... + 12143987.

It is an arithmetic number, because the mean of its divisors is an integer number (910787925).

Almost surely, 2^3618863873 is an apocalyptic number.

It is an amenable number.

3618863873 is a deficient number, since it is larger than the sum of its proper divisors (24287827).

3618863873 is a wasteful number, since it uses less digits than its factorization.

3618863873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24287826.

The product of its digits is 3483648, while the sum is 53.

The square root of 3618863873 is about 60156.9935502099. The cubic root of 3618863873 is about 1535.2911588938.

The spelling of 3618863873 in words is "three billion, six hundred eighteen million, eight hundred sixty-three thousand, eight hundred seventy-three".