3098146921 has 3 divisors (see below), whose sum is σ = 3098202583. Its totient is φ = 3098091260.

The previous prime is 3098146903. The next prime is 3098146927. The reversal of 3098146921 is 1296418903.

It is a happy number.

The square root of 3098146921 is 55661.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 853282521 + 2244864400 = 29211^2 + 47380^2 .

It is not a de Polignac number, because 3098146921 - 2⁹ = 3098146409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3098146927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27831 + ... + 83491.

Almost surely, 2^3098146921 is an apocalyptic number.

3098146921 is the 55661-st square number.

3098146921 is the 27831-st centered octagonal number.

It is an amenable number.

3098146921 is a deficient number, since it is larger than the sum of its proper divisors (55662).

3098146921 is an frugal number, since it uses more digits than its factorization.

3098146921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111322 (or 55661 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The cubic root of 3098146921 is about 1457.8091430780.

The spelling of 3098146921 in words is "three billion, ninety-eight million, one hundred forty-six thousand, nine hundred twenty-one".