1858220004 has 12 divisors (see below), whose sum is σ = 4335846704. Its totient is φ = 619406664.

The previous prime is 1858219973. The next prime is 1858220041. The reversal of 1858220004 is 4000228581.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 77425822 + ... + 77425845.

Almost surely, 2^1858220004 is an apocalyptic number.

It is an amenable number.

1858220004 is an abundant number, since it is smaller than the sum of its proper divisors (2477626700).

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

1858220004 is a wasteful number, since it uses less digits than its factorization.

1858220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154851674 (or 154851672 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 1858220004 is about 43107.0760316679. The cubic root of 1858220004 is about 1229.4165174899.

Adding to 1858220004 its reverse (4000228581), we get a palindrome (5858448585).

The spelling of 1858220004 in words is "one billion, eight hundred fifty-eight million, two hundred twenty thousand, four".