4001540535 has 24 divisors (see below), whose sum is σ = 7192894800. Its totient is φ = 2134154304.

The previous prime is 4001540531. The next prime is 4001540537. The reversal of 4001540535 is 5350451004.

It is not a de Polignac number, because 4001540535 - 2² = 4001540531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4001540499 and 4001540508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001540531) 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, 1645510 + ... + 1647939.

It is an arithmetic number, because the mean of its divisors is an integer number (299703950).

Almost surely, 2^4001540535 is an apocalyptic number.

4001540535 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4001540535 is a deficient number, since it is larger than the sum of its proper divisors (3191354265).

4001540535 is an equidigital number, since it uses as much as digits as its factorization.

4001540535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293469 (or 3293457 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 4001540535 is about 63257.7310294955. The cubic root of 4001540535 is about 1587.6048130520.

Adding to 4001540535 its reverse (5350451004), we get a palindrome (9351991539).

The spelling of 4001540535 in words is "four billion, one million, five hundred forty thousand, five hundred thirty-five".