1581341541 has 24 divisors (see below), whose sum is σ = 2311918560. Its totient is φ = 955485504.

The previous prime is 1581341539. The next prime is 1581341591. The reversal of 1581341541 is 1451431851.

It is not a de Polignac number, because 1581341541 - 2¹ = 1581341539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1581341521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1907115 + ... + 1907943.

It is an arithmetic number, because the mean of its divisors is an integer number (96329940).

Almost surely, 2^1581341541 is an apocalyptic number.

It is an amenable number.

1581341541 is a deficient number, since it is larger than the sum of its proper divisors (730577019).

1581341541 is an frugal number, since it uses more digits than its factorization.

1581341541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 904 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 1581341541 is about 39766.0853114812. The cubic root of 1581341541 is about 1165.0428348498.

The spelling of 1581341541 in words is "one billion, five hundred eighty-one million, three hundred forty-one thousand, five hundred forty-one".