1351801897 has 2 divisors, whose sum is σ = 1351801898. Its totient is φ = 1351801896.

The previous prime is 1351801889. The next prime is 1351801909. The reversal of 1351801897 is 7981081531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788261776 + 563540121 = 28076^2 + 23739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351801897 - 2³ = 1351801889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351801817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675900948 + 675900949.

It is an arithmetic number, because the mean of its divisors is an integer number (675900949).

Almost surely, 2^1351801897 is an apocalyptic number.

It is an amenable number.

1351801897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351801897 is an equidigital number, since it uses as much as digits as its factorization.

1351801897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 43.

The square root of 1351801897 is about 36766.8586773469. The cubic root of 1351801897 is about 1105.7009528553.

The spelling of 1351801897 in words is "one billion, three hundred fifty-one million, eight hundred one thousand, eight hundred ninety-seven".