19263333961 has 2 divisors, whose sum is σ = 19263333962. Its totient is φ = 19263333960.

The previous prime is 19263333919. The next prime is 19263334007. The reversal of 19263333961 is 16933336291.

It is an a-pointer prime, because the next prime (19263334007) can be obtained adding 19263333961 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18660926025 + 602407936 = 136605^2 + 24544^2 .

It is a cyclic number.

It is not a de Polignac number, because 19263333961 - 2²⁵ = 19229779529 is a prime.

It is not a weakly prime, because it can be changed into another prime (19263331961) 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, 9631666980 + 9631666981.

It is an arithmetic number, because the mean of its divisors is an integer number (9631666981).

Almost surely, 2^19263333961 is an apocalyptic number.

It is an amenable number.

19263333961 is a deficient number, since it is larger than the sum of its proper divisors (1).

19263333961 is an equidigital number, since it uses as much as digits as its factorization.

19263333961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 46.

The spelling of 19263333961 in words is "nineteen billion, two hundred sixty-three million, three hundred thirty-three thousand, nine hundred sixty-one".