19023581461 has 2 divisors, whose sum is σ = 19023581462. Its totient is φ = 19023581460.

The previous prime is 19023581459. The next prime is 19023581531. The reversal of 19023581461 is 16418532091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13503834436 + 5519747025 = 116206^2 + 74295^2 .

It is a cyclic number.

It is not a de Polignac number, because 19023581461 - 2¹ = 19023581459 is a prime.

Together with 19023581459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19023581441) 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, 9511790730 + 9511790731.

It is an arithmetic number, because the mean of its divisors is an integer number (9511790731).

Almost surely, 2^19023581461 is an apocalyptic number.

It is an amenable number.

19023581461 is a deficient number, since it is larger than the sum of its proper divisors (1).

19023581461 is an equidigital number, since it uses as much as digits as its factorization.

19023581461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 19023581461 in words is "nineteen billion, twenty-three million, five hundred eighty-one thousand, four hundred sixty-one".