2059171218 has 72 divisors (see below), whose sum is σ = 4965266124. Its totient is φ = 613085760.

The previous prime is 2059171171. The next prime is 2059171241. The reversal of 2059171218 is 8121719502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1743647049 + 315524169 = 41757^2 + 17763^2 .

It is a super-2 number, since 2×2059171218² = 8480372210079207048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 220296 + ... + 229452.

Almost surely, 2^2059171218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2059171218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2482633062).

2059171218 is an abundant number, since it is smaller than the sum of its proper divisors (2906094906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2059171218 is a wasteful number, since it uses less digits than its factorization.

2059171218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240 (or 9206 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 2059171218 is about 45378.0918285465. The cubic root of 2059171218 is about 1272.2256667674.

It can be divided in two parts, 20591 and 71218, that added together give a square (91809 = 303²).

The spelling of 2059171218 in words is "two billion, fifty-nine million, one hundred seventy-one thousand, two hundred eighteen".