581693042 has 16 divisors (see below), whose sum is σ = 1000743552. Its totient is φ = 248408160.

The previous prime is 581693039. The next prime is 581693081. The reversal of 581693042 is 240396185.

It is a happy number.

It is a super-2 number, since 2×581693042² = 676733590222427528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 581692987 and 581693005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69998 + ... + 77865.

It is an arithmetic number, because the mean of its divisors is an integer number (62546472).

Almost surely, 2^581693042 is an apocalyptic number.

581693042 is a deficient number, since it is larger than the sum of its proper divisors (419050510).

581693042 is a wasteful number, since it uses less digits than its factorization.

581693042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148153.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 581693042 is about 24118.3134153282. The cubic root of 581693042 is about 834.7657521165.

The spelling of 581693042 in words is "five hundred eighty-one million, six hundred ninety-three thousand, forty-two".