4021491594 has 32 divisors (see below), whose sum is σ = 8296854336. Its totient is φ = 1298505600.

The previous prime is 4021491587. The next prime is 4021491641. The reversal of 4021491594 is 4951941204.

It is a super-2 number, since 2×4021491594² = 32344789281225321672, which contains 22 as substring.

It is a Curzon 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, 10494 + ... + 90294.

It is an arithmetic number, because the mean of its divisors is an integer number (259276698).

Almost surely, 2^4021491594 is an apocalyptic number.

4021491594 is an abundant number, since it is smaller than the sum of its proper divisors (4275362742).

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

4021491594 is a wasteful number, since it uses less digits than its factorization.

4021491594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80070.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 4021491594 is about 63415.2315615105. The cubic root of 4021491594 is about 1590.2389570056.

The spelling of 4021491594 in words is "four billion, twenty-one million, four hundred ninety-one thousand, five hundred ninety-four".