3019000021 has 8 divisors (see below), whose sum is σ = 3189553920. Its totient is φ = 2852876208.

The previous prime is 3019000001. The next prime is 3019000031. The reversal of 3019000021 is 1200009103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3019000021 - 2²¹ = 3016902869 is a prime.

It is a super-2 number, since 2×3019000021² = 18228722253596000882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3018999959 and 3019000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3019000001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1106121 + ... + 1108846.

It is an arithmetic number, because the mean of its divisors is an integer number (398694240).

Almost surely, 2^3019000021 is an apocalyptic number.

It is an amenable number.

3019000021 is a deficient number, since it is larger than the sum of its proper divisors (170553899).

3019000021 is a wasteful number, since it uses less digits than its factorization.

3019000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215043.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 3019000021 is about 54945.4276623633. The cubic root of 3019000021 is about 1445.2879174691.

Adding to 3019000021 its reverse (1200009103), we get a palindrome (4219009124).

The spelling of 3019000021 in words is "three billion, nineteen million, twenty-one", and thus it is an aban number and an uban number.