30943272649 has 9 divisors (see below), whose sum is σ = 31547628903. Its totient is φ = 30350290152.

The previous prime is 30943272599. The next prime is 30943272707. The reversal of 30943272649 is 94627234903.

The square root of 30943272649 is 175907.

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

It can be written as a sum of positive squares in only one way, i.e., 22306916025 + 8636356624 = 149355^2 + 92932^2 .

It is not a de Polignac number, because 30943272649 - 2¹¹ = 30943270601 is a prime.

It is a super-2 number, since 2×30943272649² (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 (30943273649) 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, 9321412 + ... + 9324730.

Almost surely, 2^30943272649 is an apocalyptic number.

30943272649 is the 175907-th square number.

30943272649 is the 87954-th centered octagonal number.

It is an amenable number.

30943272649 is a deficient number, since it is larger than the sum of its proper divisors (604356254).

30943272649 is an frugal number, since it uses more digits than its factorization.

30943272649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744 (or 3372 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

Multiplying 30943272649 by its sum of digits (49), we get a square (1516220359801 = 1231349²).

The spelling of 30943272649 in words is "thirty billion, nine hundred forty-three million, two hundred seventy-two thousand, six hundred forty-nine".