30832901649 has 81 divisors (see below), whose sum is σ = 52168911249. Its totient is φ = 17531205120.

The previous prime is 30832901647. The next prime is 30832901653. The reversal of 30832901649 is 94610923803.

It is a happy number.

The square root of 30832901649 is 175593.

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

30832901649 is a `hidden beast` number, since 308 + 3 + 290 + 16 + 49 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4899020049 + 25933881600 = 69993^2 + 161040^2 .

It is not a de Polignac number, because 30832901649 - 2¹ = 30832901647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30832901641) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 98507517 + ... + 98507829.

Almost surely, 2^30832901649 is an apocalyptic number.

30832901649 is the 175593-rd square number.

30832901649 is the 87797-th centered octagonal number.

It is an amenable number.

30832901649 is a deficient number, since it is larger than the sum of its proper divisors (21336009600).

30832901649 is a wasteful number, since it uses less digits than its factorization.

30832901649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 30832901649 in words is "thirty billion, eight hundred thirty-two million, nine hundred one thousand, six hundred forty-nine".