3098891538 has 18 divisors (see below), whose sum is σ = 6714776757. Its totient is φ = 1032885120.

The previous prime is 3098891501. The next prime is 3098891539. The reversal of 3098891538 is 8351988903.

It can be written as a sum of positive squares in 2 ways, for example, as 2628305289 + 470586249 = 51267^2 + 21693^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=39363.

It is not an unprimeable number, because it can be changed into a prime (3098891539) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 229618 + ... + 242738.

Almost surely, 2^3098891538 is an apocalyptic number.

3098891538 is an abundant number, since it is smaller than the sum of its proper divisors (3615885219).

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

3098891538 is an frugal number, since it uses more digits than its factorization.

3098891538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26250 (or 13126 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 3098891538 is about 55667.6884556921. The cubic root of 3098891538 is about 1457.9259249851.

The spelling of 3098891538 in words is "three billion, ninety-eight million, eight hundred ninety-one thousand, five hundred thirty-eight".