3890565890 has 16 divisors (see below), whose sum is σ = 7013436408. Its totient is φ = 1553911296.

The previous prime is 3890565869. The next prime is 3890565901. The reversal of 3890565890 is 985650983.

3890565890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3220222009 + 670343881 = 56747^2 + 25891^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282317 + ... + 295776.

Almost surely, 2^3890565890 is an apocalyptic number.

3890565890 is a deficient number, since it is larger than the sum of its proper divisors (3122870518).

3890565890 is a wasteful number, since it uses less digits than its factorization.

3890565890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578773.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The square root of 3890565890 is about 62374.4009189667. The cubic root of 3890565890 is about 1572.7906727080.

The spelling of 3890565890 in words is "three billion, eight hundred ninety million, five hundred sixty-five thousand, eight hundred ninety".