1581346113 has 8 divisors (see below), whose sum is σ = 2157495648. Its totient is φ = 1029713664.

The previous prime is 1581346111. The next prime is 1581346159. The reversal of 1581346113 is 3116431851.

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

It is not a de Polignac number, because 1581346113 - 2¹ = 1581346111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1581346111) 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, 6129120 + ... + 6129377.

It is an arithmetic number, because the mean of its divisors is an integer number (269686956).

Almost surely, 2^1581346113 is an apocalyptic number.

It is an amenable number.

1581346113 is a deficient number, since it is larger than the sum of its proper divisors (576149535).

1581346113 is a wasteful number, since it uses less digits than its factorization.

1581346113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12258543.

The product of its digits is 8640, while the sum is 33.

The square root of 1581346113 is about 39766.1427976111. The cubic root of 1581346113 is about 1165.0439576456.

Adding to 1581346113 its reverse (3116431851), we get a palindrome (4697777964).

The spelling of 1581346113 in words is "one billion, five hundred eighty-one million, three hundred forty-six thousand, one hundred thirteen".