8931573049 has 27 divisors (see below), whose sum is σ = 10879693797. Its totient is φ = 7310305464.

The previous prime is 8931573047. The next prime is 8931573089. The reversal of 8931573049 is 9403751398.

The square root of 8931573049 is 94507.

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

It is not a de Polignac number, because 8931573049 - 2¹ = 8931573047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 8931572993 and 8931573011.

It is not an unprimeable number, because it can be changed into a prime (8931573047) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15215334 + ... + 15215920.

Almost surely, 2^8931573049 is an apocalyptic number.

8931573049 is the 94507-th square number.

8931573049 is the 47254-th centered octagonal number.

It is an amenable number.

8931573049 is a deficient number, since it is larger than the sum of its proper divisors (1948120748).

8931573049 is an frugal number, since it uses more digits than its factorization.

8931573049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The cubic root of 8931573049 is about 2074.7987843013.

Multiplying 8931573049 by its sum of digits (49), we get a square (437647079401 = 661549²).

8931573049 divided by its sum of digits (49) gives a square (182277001 = 13501²).

The spelling of 8931573049 in words is "eight billion, nine hundred thirty-one million, five hundred seventy-three thousand, forty-nine".