1913073287 has 2 divisors, whose sum is σ = 1913073288. Its totient is φ = 1913073286.

The previous prime is 1913073269. The next prime is 1913073293. The reversal of 1913073287 is 7823703191.

It is a strong prime.

It is an emirp because it is prime and its reverse (7823703191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1913073287 - 2⁸ = 1913073031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913073187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956536643 + 956536644.

It is an arithmetic number, because the mean of its divisors is an integer number (956536644).

Almost surely, 2^1913073287 is an apocalyptic number.

1913073287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913073287 is an equidigital number, since it uses as much as digits as its factorization.

1913073287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 1913073287 is about 43738.6932475126. The cubic root of 1913073287 is about 1241.3965550024.

The spelling of 1913073287 in words is "one billion, nine hundred thirteen million, seventy-three thousand, two hundred eighty-seven".