4021961858 has 8 divisors (see below), whose sum is σ = 6033467280. Its totient is φ = 2010806100.

The previous prime is 4021961843. The next prime is 4021961873. The reversal of 4021961858 is 8581691204.

4021961858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4021961843) and next prime (4021961873).

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

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, 56468 + ... + 105983.

It is an arithmetic number, because the mean of its divisors is an integer number (754183410).

Almost surely, 2^4021961858 is an apocalyptic number.

4021961858 is a deficient number, since it is larger than the sum of its proper divisors (2011505422).

4021961858 is a wasteful number, since it uses less digits than its factorization.

4021961858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174832.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 4021961858 is about 63418.9392689597. The cubic root of 4021961858 is about 1590.3009408878.

The spelling of 4021961858 in words is "four billion, twenty-one million, nine hundred sixty-one thousand, eight hundred fifty-eight".