3898021158 has 80 divisors (see below), whose sum is σ = 9100206720. Its totient is φ = 1245715200.

The previous prime is 3898021139. The next prime is 3898021159. The reversal of 3898021158 is 8511208983.

It is a happy number.

3898021158 is a `hidden beast` number, since 389 + 8 + 0 + 211 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898021159) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 543838 + ... + 550958.

It is an arithmetic number, because the mean of its divisors is an integer number (113752584).

Almost surely, 2^3898021158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3898021158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4550103360).

3898021158 is an abundant number, since it is smaller than the sum of its proper divisors (5202185562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3898021158 is a wasteful number, since it uses less digits than its factorization.

3898021158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 3898021158 is about 62434.1345579483. The cubic root of 3898021158 is about 1573.7946478438.

The spelling of 3898021158 in words is "three billion, eight hundred ninety-eight million, twenty-one thousand, one hundred fifty-eight".