581013949 has 8 divisors (see below), whose sum is σ = 583651640. Its totient is φ = 578382336.

The previous prime is 581013943. The next prime is 581014003. The reversal of 581013949 is 949310185.

It can be written as a sum of positive squares in 4 ways, for example, as 179292100 + 401721849 = 13390^2 + 20043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 581013949 - 2²³ = 572625341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581013943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347287 + ... + 348955.

It is an arithmetic number, because the mean of its divisors is an integer number (72956455).

Almost surely, 2^581013949 is an apocalyptic number.

It is an amenable number.

581013949 is a deficient number, since it is larger than the sum of its proper divisors (2637691).

581013949 is a wasteful number, since it uses less digits than its factorization.

581013949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 581013949 is about 24104.2309356677. The cubic root of 581013949 is about 834.4407787013.

The spelling of 581013949 in words is "five hundred eighty-one million, thirteen thousand, nine hundred forty-nine".