4021920863 has 2 divisors, whose sum is σ = 4021920864. Its totient is φ = 4021920862.

The previous prime is 4021920853. The next prime is 4021920901. The reversal of 4021920863 is 3680291204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021920863 - 2⁸ = 4021920607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021920803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010960431 + 2010960432.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960432).

Almost surely, 2^4021920863 is an apocalyptic number.

4021920863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021920863 is an equidigital number, since it uses as much as digits as its factorization.

4021920863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 4021920863 is about 63418.6160602705. The cubic root of 4021920863 is about 1590.2955376700.

The spelling of 4021920863 in words is "four billion, twenty-one million, nine hundred twenty thousand, eight hundred sixty-three".