1519000991 has 2 divisors, whose sum is σ = 1519000992. Its totient is φ = 1519000990.

The previous prime is 1519000969. The next prime is 1519001117. The reversal of 1519000991 is 1990009151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1519000991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1519009991) 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, 759500495 + 759500496.

It is an arithmetic number, because the mean of its divisors is an integer number (759500496).

Almost surely, 2^1519000991 is an apocalyptic number.

1519000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1519000991 is an equidigital number, since it uses as much as digits as its factorization.

1519000991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 35.

The square root of 1519000991 is about 38974.3632532977. The cubic root of 1519000991 is about 1149.5274658501.

The spelling of 1519000991 in words is "one billion, five hundred nineteen million, nine hundred ninety-one", and thus it is an aban number.