3898931205 has 32 divisors (see below), whose sum is σ = 6828312960. Its totient is φ = 1888001280.

The previous prime is 3898931171. The next prime is 3898931209. The reversal of 3898931205 is 5021398983.

It is a happy number.

It is not a de Polignac number, because 3898931205 - 2¹⁰ = 3898930181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898931209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151995 + ... + 175784.

It is an arithmetic number, because the mean of its divisors is an integer number (213384780).

Almost surely, 2^3898931205 is an apocalyptic number.

It is an amenable number.

3898931205 is a deficient number, since it is larger than the sum of its proper divisors (2929381755).

3898931205 is a wasteful number, since it uses less digits than its factorization.

3898931205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327861.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 3898931205 is about 62441.4221891206. The cubic root of 3898931205 is about 1573.9171130295.

The spelling of 3898931205 in words is "three billion, eight hundred ninety-eight million, nine hundred thirty-one thousand, two hundred five".