1581310151 has 2 divisors, whose sum is σ = 1581310152. Its totient is φ = 1581310150.

The previous prime is 1581310127. The next prime is 1581310163. The reversal of 1581310151 is 1510131851.

It is a strong prime.

It is an emirp because it is prime and its reverse (1510131851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1581310151 - 2¹⁰ = 1581309127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1581310151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1581310111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790655075 + 790655076.

It is an arithmetic number, because the mean of its divisors is an integer number (790655076).

Almost surely, 2^1581310151 is an apocalyptic number.

1581310151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1581310151 is an equidigital number, since it uses as much as digits as its factorization.

1581310151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 26.

The square root of 1581310151 is about 39765.6906264684. The cubic root of 1581310151 is about 1165.0351260078.

The spelling of 1581310151 in words is "one billion, five hundred eighty-one million, three hundred ten thousand, one hundred fifty-one".