5618448165 has 96 divisors (see below), whose sum is σ = 10434977280. Its totient is φ = 2559145600.

The previous prime is 5618448149. The next prime is 5618448203.

5618448165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5618448165 - 2⁴ = 5618448149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5149270 + ... + 5150360.

It is an arithmetic number, because the mean of its divisors is an integer number (108697680).

Almost surely, 2^5618448165 is an apocalyptic number.

5618448165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5618448165 is a deficient number, since it is larger than the sum of its proper divisors (4816529115).

5618448165 is a wasteful number, since it uses less digits than its factorization.

5618448165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1192 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The square root of 5618448165 is about 74956.3083736119. The cubic root of 5618448165 is about 1777.7558898180.

The spelling of 5618448165 in words is "five billion, six hundred eighteen million, four hundred forty-eight thousand, one hundred sixty-five".