1315604387 has 2 divisors, whose sum is σ = 1315604388. Its totient is φ = 1315604386.

The previous prime is 1315604383. The next prime is 1315604413. The reversal of 1315604387 is 7834065131.

It is a weak prime.

It is an emirp because it is prime and its reverse (7834065131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315604387 - 2² = 1315604383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315604387.

It is not a weakly prime, because it can be changed into another prime (1315604383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657802193 + 657802194.

It is an arithmetic number, because the mean of its divisors is an integer number (657802194).

Almost surely, 2^1315604387 is an apocalyptic number.

1315604387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315604387 is an equidigital number, since it uses as much as digits as its factorization.

1315604387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1315604387 is about 36271.2611718975. The cubic root of 1315604387 is about 1095.7423257507.

The spelling of 1315604387 in words is "one billion, three hundred fifteen million, six hundred four thousand, three hundred eighty-seven".