4194570021 has 16 divisors (see below), whose sum is σ = 6005155968. Its totient is φ = 2594816000.

The previous prime is 4194569989. The next prime is 4194570047. The reversal of 4194570021 is 1200754914.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4194570021 - 2⁵ = 4194569989 is a prime.

It is a super-2 number, since 2×4194570021² = 35188835322143880882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4194570071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575580 + ... + 582821.

It is an arithmetic number, because the mean of its divisors is an integer number (375322248).

Almost surely, 2^4194570021 is an apocalyptic number.

It is an amenable number.

4194570021 is a deficient number, since it is larger than the sum of its proper divisors (1810585947).

4194570021 is a wasteful number, since it uses less digits than its factorization.

4194570021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158492.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 4194570021 is about 64765.5002373949. The cubic root of 4194570021 is about 1612.7330379381.

The spelling of 4194570021 in words is "four billion, one hundred ninety-four million, five hundred seventy thousand, twenty-one".