30644953249 has 9 divisors (see below), whose sum is σ = 31670997201. Its totient is φ = 29651154660.

The previous prime is 30644953247. The next prime is 30644953259. The reversal of 30644953249 is 94235944603.

It is a happy number.

The square root of 30644953249 is 175057.

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

It is not a de Polignac number, because 30644953249 - 2¹ = 30644953247 is a prime.

It is a super-2 number, since 2×30644953249² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30644953247) 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, 5423944 + ... + 5429590.

It is an arithmetic number, because the mean of its divisors is an integer number (3518999689).

Almost surely, 2^30644953249 is an apocalyptic number.

30644953249 is the 175057-th square number.

30644953249 is the 87529-th centered octagonal number.

It is an amenable number.

30644953249 is a deficient number, since it is larger than the sum of its proper divisors (1026043952).

30644953249 is an frugal number, since it uses more digits than its factorization.

30644953249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356 (or 5678 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 49.

Multiplying 30644953249 by its sum of digits (49), we get a square (1501602709201 = 1225399²).

The spelling of 30644953249 in words is "thirty billion, six hundred forty-four million, nine hundred fifty-three thousand, two hundred forty-nine".