19909000763 has 2 divisors, whose sum is σ = 19909000764. Its totient is φ = 19909000762.

The previous prime is 19909000751. The next prime is 19909000829. The reversal of 19909000763 is 36700090991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19909000763 - 2³⁴ = 2729131579 is a prime.

It is a super-2 number, since 2×19909000763² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19909000963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9954500381 + 9954500382.

It is an arithmetic number, because the mean of its divisors is an integer number (9954500382).

Almost surely, 2^19909000763 is an apocalyptic number.

19909000763 is a deficient number, since it is larger than the sum of its proper divisors (1).

19909000763 is an equidigital number, since it uses as much as digits as its factorization.

19909000763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The spelling of 19909000763 in words is "nineteen billion, nine hundred nine million, seven hundred sixty-three", and thus it is an aban number.