4001057633 has 4 divisors (see below), whose sum is σ = 4010840580. Its totient is φ = 3991274688.

The previous prime is 4001057629. The next prime is 4001057651. The reversal of 4001057633 is 3367501004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2537842129 + 1463215504 = 50377^2 + 38252^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001057633 - 2² = 4001057629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4001057596 and 4001057605.

It is not an unprimeable number, because it can be changed into a prime (4001057623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4890860 + ... + 4891677.

It is an arithmetic number, because the mean of its divisors is an integer number (1002710145).

Almost surely, 2^4001057633 is an apocalyptic number.

It is an amenable number.

4001057633 is a deficient number, since it is larger than the sum of its proper divisors (9782947).

4001057633 is an equidigital number, since it uses as much as digits as its factorization.

4001057633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782946.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 4001057633 is about 63253.9139737613. The cubic root of 4001057633 is about 1587.5409469505.

Adding to 4001057633 its reverse (3367501004), we get a palindrome (7368558637).

The spelling of 4001057633 in words is "four billion, one million, fifty-seven thousand, six hundred thirty-three".