3889824620845 has 16 divisors (see below), whose sum is σ = 4687845081840. Its totient is φ = 3098505625600.

The previous prime is 3889824620839. The next prime is 3889824620849. The reversal of 3889824620845 is 5480264289883.

It can be written as a sum of positive squares in 8 ways, for example, as 135151081641 + 3754673539204 = 367629^2 + 1937698^2 .

It is not a de Polignac number, because 3889824620845 - 2¹⁵ = 3889824588077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889824620849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895101 + ... + 2929309.

It is an arithmetic number, because the mean of its divisors is an integer number (292990317615).

Almost surely, 2^{3889824620845} is an apocalyptic number.

It is an amenable number.

3889824620845 is a deficient number, since it is larger than the sum of its proper divisors (798020460995).

3889824620845 is a wasteful number, since it uses less digits than its factorization.

3889824620845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035856.

The product of its (nonzero) digits is 212336640, while the sum is 67.

The spelling of 3889824620845 in words is "three trillion, eight hundred eighty-nine billion, eight hundred twenty-four million, six hundred twenty thousand, eight hundred forty-five".