1315735849 has 2 divisors, whose sum is σ = 1315735850. Its totient is φ = 1315735848.

The previous prime is 1315735847. The next prime is 1315735871. The reversal of 1315735849 is 9485375131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 676000000 + 639735849 = 26000^2 + 25293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315735849 - 2¹ = 1315735847 is a prime.

Together with 1315735847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1315735799 and 1315735808.

It is not a weakly prime, because it can be changed into another prime (1315735843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657867924 + 657867925.

It is an arithmetic number, because the mean of its divisors is an integer number (657867925).

Almost surely, 2^1315735849 is an apocalyptic number.

It is an amenable number.

1315735849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315735849 is an equidigital number, since it uses as much as digits as its factorization.

1315735849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 1315735849 is about 36273.0733327078. The cubic root of 1315735849 is about 1095.7788219501.

The spelling of 1315735849 in words is "one billion, three hundred fifteen million, seven hundred thirty-five thousand, eight hundred forty-nine".