4007542865 has 4 divisors (see below), whose sum is σ = 4809051444. Its totient is φ = 3206034288.

The previous prime is 4007542859. The next prime is 4007542873. The reversal of 4007542865 is 5682457004.

4007542865 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 1767697936 + 2239844929 = 42044^2 + 47327^2 .

It is a cyclic number.

It is not a de Polignac number, because 4007542865 - 2⁶ = 4007542801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400754282 + ... + 400754291.

It is an arithmetic number, because the mean of its divisors is an integer number (1202262861).

Almost surely, 2^4007542865 is an apocalyptic number.

It is an amenable number.

4007542865 is a deficient number, since it is larger than the sum of its proper divisors (801508579).

4007542865 is an equidigital number, since it uses as much as digits as its factorization.

4007542865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801508578.

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 4007542865 is about 63305.1567014884. The cubic root of 4007542865 is about 1588.3982214240.

Adding to 4007542865 its reverse (5682457004), we get a palindrome (9689999869).

The spelling of 4007542865 in words is "four billion, seven million, five hundred forty-two thousand, eight hundred sixty-five".