1018687104 has 144 divisors (see below), whose sum is σ = 3046478370. Its totient is φ = 339282432.

The previous prime is 1018687099. The next prime is 1018687127. The reversal of 1018687104 is 4017868101.

It can be written as a sum of positive squares in only one way, i.e., 1008189504 + 10497600 = 31752^2 + 3240^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 839202 + ... + 840414.

Almost surely, 2^1018687104 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 1018687104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523239185).

1018687104 is an abundant number, since it is smaller than the sum of its proper divisors (2027791266).

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

1018687104 is an frugal number, since it uses more digits than its factorization.

1018687104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1018687104 is about 31916.8780428162. The cubic root of 1018687104 is about 1006.1906316632.

The spelling of 1018687104 in words is "one billion, eighteen million, six hundred eighty-seven thousand, one hundred four".