4021564245 has 16 divisors (see below), whose sum is σ = 6435433152. Its totient is φ = 2144524160.

The previous prime is 4021564231. The next prime is 4021564273. The reversal of 4021564245 is 5424651204.

It is not a de Polignac number, because 4021564245 - 2⁴ = 4021564229 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 120289 + ... + 150041.

It is an arithmetic number, because the mean of its divisors is an integer number (402214572).

Almost surely, 2^4021564245 is an apocalyptic number.

It is an amenable number.

4021564245 is a deficient number, since it is larger than the sum of its proper divisors (2413868907).

4021564245 is a wasteful number, since it uses less digits than its factorization.

4021564245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38772.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 4021564245 is about 63415.8043787193. The cubic root of 4021564245 is about 1590.2485331999.

The spelling of 4021564245 in words is "four billion, twenty-one million, five hundred sixty-four thousand, two hundred forty-five".