1004131218 has 32 divisors (see below), whose sum is σ = 2053175040. Its totient is φ = 327240320.

The previous prime is 1004131201. The next prime is 1004131237. The reversal of 1004131218 is 8121314001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1004131194 and 1004131203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484288 + ... + 486356.

It is an arithmetic number, because the mean of its divisors is an integer number (64161720).

Almost surely, 2^1004131218 is an apocalyptic number.

1004131218 is an abundant number, since it is smaller than the sum of its proper divisors (1049043822).

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

1004131218 is a wasteful number, since it uses less digits than its factorization.

1004131218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1004131218 is about 31688.0295695393. The cubic root of 1004131218 is about 1001.3751806779.

Adding to 1004131218 its reverse (8121314001), we get a palindrome (9125445219).

The spelling of 1004131218 in words is "one billion, four million, one hundred thirty-one thousand, two hundred eighteen".