5618613881 has 8 divisors (see below), whose sum is σ = 5648672640. Its totient is φ = 5588602128.

The previous prime is 5618613863. The next prime is 5618613887. The reversal of 5618613881 is 1883168165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5618613881 is a prime.

It is a super-2 number, since 2×5618613881² = 63137643887531764322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5618613887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242480 + ... + 264638.

It is an arithmetic number, because the mean of its divisors is an integer number (706084080).

Almost surely, 2^5618613881 is an apocalyptic number.

It is an amenable number.

5618613881 is a deficient number, since it is larger than the sum of its proper divisors (30058759).

5618613881 is a wasteful number, since it uses less digits than its factorization.

5618613881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23503.

The product of its digits is 276480, while the sum is 47.

The square root of 5618613881 is about 74957.4137827607. The cubic root of 5618613881 is about 1777.7733679360.

The spelling of 5618613881 in words is "five billion, six hundred eighteen million, six hundred thirteen thousand, eight hundred eighty-one".