1351581147 has 40 divisors (see below), whose sum is σ = 2313036000. Its totient is φ = 770466816.

The previous prime is 1351581139. The next prime is 1351581173. The reversal of 1351581147 is 7411851531.

It is a happy number.

1351581147 is a `hidden beast` number, since 1 + 35 + 1 + 581 + 1 + 47 = 666.

It is not a de Polignac number, because 1351581147 - 2³ = 1351581139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351581137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 251929 + ... + 257237.

It is an arithmetic number, because the mean of its divisors is an integer number (57825900).

Almost surely, 2^1351581147 is an apocalyptic number.

1351581147 is a deficient number, since it is larger than the sum of its proper divisors (961454853).

1351581147 is an equidigital number, since it uses as much as digits as its factorization.

1351581147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777 (or 5768 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The square root of 1351581147 is about 36763.8565305655. The cubic root of 1351581147 is about 1105.6407623857.

The spelling of 1351581147 in words is "one billion, three hundred fifty-one million, five hundred eighty-one thousand, one hundred forty-seven".