3551018120 has 96 divisors (see below), whose sum is σ = 8732593800. Its totient is φ = 1291732992.

The previous prime is 3551018117. The next prime is 3551018137. The reversal of 3551018120 is 218101553.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 530196676 + 3020821444 = 23026^2 + 54962^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 3551018120.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12819422 + ... + 12819698.

Almost surely, 2^3551018120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551018120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4366296900).

3551018120 is an abundant number, since it is smaller than the sum of its proper divisors (5181575680).

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

3551018120 is a wasteful number, since it uses less digits than its factorization.

3551018120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 3551018120 is about 59590.4196998142. The cubic root of 3551018120 is about 1525.6361219692.

Adding to 3551018120 its reverse (218101553), we get a palindrome (3769119673).

The spelling of 3551018120 in words is "three billion, five hundred fifty-one million, eighteen thousand, one hundred twenty".