1913294687 has 2 divisors, whose sum is σ = 1913294688. Its totient is φ = 1913294686.

The previous prime is 1913294681. The next prime is 1913294717. The reversal of 1913294687 is 7864923191.

It is a weak prime.

It is an emirp because it is prime and its reverse (7864923191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1913294687 - 2⁴ = 1913294671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913294681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956647343 + 956647344.

It is an arithmetic number, because the mean of its divisors is an integer number (956647344).

Almost surely, 2^1913294687 is an apocalyptic number.

1913294687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913294687 is an equidigital number, since it uses as much as digits as its factorization.

1913294687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 1913294687 is about 43741.2241141009. The cubic root of 1913294687 is about 1241.4444421024. Note that the first 5 decimals are identical.

The spelling of 1913294687 in words is "one billion, nine hundred thirteen million, two hundred ninety-four thousand, six hundred eighty-seven".