3850432561 has 4 divisors (see below), whose sum is σ = 4076928612. Its totient is φ = 3623936512.

The previous prime is 3850432529. The next prime is 3850432577. The reversal of 3850432561 is 1652340583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1652340583 = 97 ⋅17034439.

It can be written as a sum of positive squares in 2 ways, for example, as 1881824400 + 1968608161 = 43380^2 + 44369^2 .

It is not a de Polignac number, because 3850432561 - 2⁵ = 3850432529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3850432561.

It is not an unprimeable number, because it can be changed into a prime (3850432501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113248000 + ... + 113248033.

It is an arithmetic number, because the mean of its divisors is an integer number (1019232153).

Almost surely, 2^3850432561 is an apocalyptic number.

It is an amenable number.

3850432561 is a deficient number, since it is larger than the sum of its proper divisors (226496051).

3850432561 is a wasteful number, since it uses less digits than its factorization.

3850432561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226496050.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 3850432561 is about 62051.8538079242. The cubic root of 3850432561 is about 1567.3639024544.

The spelling of 3850432561 in words is "three billion, eight hundred fifty million, four hundred thirty-two thousand, five hundred sixty-one".