3971520535 has 32 divisors (see below), whose sum is σ = 5124772800. Its totient is φ = 2944002048.

The previous prime is 3971520529. The next prime is 3971520571. The reversal of 3971520535 is 5350251793.

3971520535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3971520535 - 2⁵ = 3971520503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2461389 + ... + 2463001.

It is an arithmetic number, because the mean of its divisors is an integer number (160149150).

Almost surely, 2^3971520535 is an apocalyptic number.

3971520535 is a deficient number, since it is larger than the sum of its proper divisors (1153252265).

3971520535 is a wasteful number, since it uses less digits than its factorization.

3971520535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 3971520535 is about 63020.0010710885. The cubic root of 3971520535 is about 1583.6247143394.

The spelling of 3971520535 in words is "three billion, nine hundred seventy-one million, five hundred twenty thousand, five hundred thirty-five".