4021902646 has 8 divisors (see below), whose sum is σ = 6037271280. Its totient is φ = 2009478888.

The previous prime is 4021902637. The next prime is 4021902779. The reversal of 4021902646 is 6462091204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732801 + ... + 738268.

It is an arithmetic number, because the mean of its divisors is an integer number (754658910).

Almost surely, 2^4021902646 is an apocalyptic number.

4021902646 is a deficient number, since it is larger than the sum of its proper divisors (2015368634).

4021902646 is a wasteful number, since it uses less digits than its factorization.

4021902646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472438.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4021902646 is about 63418.4724350879. The cubic root of 4021902646 is about 1590.2931366234.

The spelling of 4021902646 in words is "four billion, twenty-one million, nine hundred two thousand, six hundred forty-six".