30004821961 has 3 divisors (see below), whose sum is σ = 30004995181. Its totient is φ = 30004648742.

The previous prime is 30004821929. The next prime is 30004821991. The reversal of 30004821961 is 16912840003.

The square root of 30004821961 is 173219.

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 is not a de Polignac number, because 30004821961 - 2⁵ = 30004821929 is a prime.

It is a super-2 number, since 2×30004821961² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30004821901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 86610 + ... + 259828.

Almost surely, 2^30004821961 is an apocalyptic number.

30004821961 is the 173219-th square number.

30004821961 is the 86610-th centered octagonal number.

It is an amenable number.

30004821961 is a deficient number, since it is larger than the sum of its proper divisors (173220).

30004821961 is an frugal number, since it uses more digits than its factorization.

30004821961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346438 (or 173219 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 30004821961 in words is "thirty billion, four million, eight hundred twenty-one thousand, nine hundred sixty-one".