30304194561 has 9 divisors (see below), whose sum is σ = 43773479841. Its totient is φ = 20202448212.

The previous prime is 30304194551. The next prime is 30304194589. The reversal of 30304194561 is 16549140303.

The square root of 30304194561 is 174081.

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

30304194561 is a `hidden beast` number, since 3 + 0 + 3 + 0 + 4 + 1 + 94 + 561 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 30304194561 - 2²⁵ = 30270640129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30304194551) 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, 493230 + ... + 551256.

Almost surely, 2^30304194561 is an apocalyptic number.

30304194561 is the 174081-st square number.

30304194561 is the 87041-st centered octagonal number.

It is an amenable number.

30304194561 is a deficient number, since it is larger than the sum of its proper divisors (13469285280).

30304194561 is an frugal number, since it uses more digits than its factorization.

30304194561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116060 (or 58030 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Multiplying 30304194561 by its sum of digits (36), we get a square (1090951004196 = 1044486²).

The spelling of 30304194561 in words is "thirty billion, three hundred four million, one hundred ninety-four thousand, five hundred sixty-one".