4021491606 has 16 divisors (see below), whose sum is σ = 8774163648. Its totient is φ = 1218633800.

The previous prime is 4021491587. The next prime is 4021491641. The reversal of 4021491606 is 6061941204.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30465780 + ... + 30465911.

It is an arithmetic number, because the mean of its divisors is an integer number (548385228).

Almost surely, 2^4021491606 is an apocalyptic number.

4021491606 is an abundant number, since it is smaller than the sum of its proper divisors (4752672042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021491606 is a wasteful number, since it uses less digits than its factorization.

4021491606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60931707.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 4021491606 is about 63415.2316561250. The cubic root of 4021491606 is about 1590.2389585873.

The spelling of 4021491606 in words is "four billion, twenty-one million, four hundred ninety-one thousand, six hundred six".