4002171652 has 6 divisors (see below), whose sum is σ = 7003800398. Its totient is φ = 2001085824.

The previous prime is 4002171617. The next prime is 4002171653. The reversal of 4002171652 is 2561712004.

It can be written as a sum of positive squares in only one way, i.e., 3855664836 + 146506816 = 62094^2 + 12104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4002171652.

It is not an unprimeable number, because it can be changed into a prime (4002171653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500271453 + ... + 500271460.

Almost surely, 2^4002171652 is an apocalyptic number.

It is an amenable number.

4002171652 is a deficient number, since it is larger than the sum of its proper divisors (3001628746).

4002171652 is a wasteful number, since it uses less digits than its factorization.

4002171652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000542917 (or 1000542915 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 4002171652 is about 63262.7192902740. The cubic root of 4002171652 is about 1587.6882735515.

Adding to 4002171652 its reverse (2561712004), we get a palindrome (6563883656).

The spelling of 4002171652 in words is "four billion, two million, one hundred seventy-one thousand, six hundred fifty-two".