4145021586 has 48 divisors (see below), whose sum is σ = 9325671264. Its totient is φ = 1379869344.

The previous prime is 4145021581. The next prime is 4145021611. The reversal of 4145021586 is 6851205414.

It is a happy number.

4145021586 is a `hidden beast` number, since 4 + 1 + 4 + 50 + 21 + 586 = 666.

It is a super-3 number, since 3×4145021586³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4145021586.

It is not an unprimeable number, because it can be changed into a prime (4145021581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396766 + ... + 407078.

It is an arithmetic number, because the mean of its divisors is an integer number (194284818).

Almost surely, 2^4145021586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4145021586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4662835632).

4145021586 is an abundant number, since it is smaller than the sum of its proper divisors (5180649678).

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

4145021586 is a wasteful number, since it uses less digits than its factorization.

4145021586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11157 (or 11145 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 4145021586 is about 64381.8420519326. The cubic root of 4145021586 is about 1606.3577226507.

It can be divided in two parts, 41450 and 21586, that added together give a palindrome (63036).

The spelling of 4145021586 in words is "four billion, one hundred forty-five million, twenty-one thousand, five hundred eighty-six".