2021384615 has 16 divisors (see below), whose sum is σ = 2459455488. Its totient is φ = 1594716576.

The previous prime is 2021384611. The next prime is 2021384621. The reversal of 2021384615 is 5164831202.

It is a cyclic number.

It is not a de Polignac number, because 2021384615 - 2² = 2021384611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021384611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110834 + ... + 127776.

It is an arithmetic number, because the mean of its divisors is an integer number (153715968).

Almost surely, 2^2021384615 is an apocalyptic number.

2021384615 is a deficient number, since it is larger than the sum of its proper divisors (438070873).

2021384615 is a wasteful number, since it uses less digits than its factorization.

2021384615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17278.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2021384615 is about 44959.8111094787. The cubic root of 2021384615 is about 1264.3956274973.

The spelling of 2021384615 in words is "two billion, twenty-one million, three hundred eighty-four thousand, six hundred fifteen".