1347507481 has 2 divisors, whose sum is σ = 1347507482. Its totient is φ = 1347507480.

The previous prime is 1347507479. The next prime is 1347507521. The reversal of 1347507481 is 1847057431.

It is a happy number.

It is an a-pointer prime, because the next prime (1347507521) can be obtained adding 1347507481 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960008256 + 387499225 = 30984^2 + 19685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1347507481 - 2¹ = 1347507479 is a prime.

It is a super-2 number, since 2×1347507481² = 3631552822701930722, which contains 22 as substring.

Together with 1347507479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1347597481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673753740 + 673753741.

It is an arithmetic number, because the mean of its divisors is an integer number (673753741).

Almost surely, 2^1347507481 is an apocalyptic number.

It is an amenable number.

1347507481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347507481 is an equidigital number, since it uses as much as digits as its factorization.

1347507481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1347507481 is about 36708.4115837229. The cubic root of 1347507481 is about 1104.5288439943.

The spelling of 1347507481 in words is "one billion, three hundred forty-seven million, five hundred seven thousand, four hundred eighty-one".