19010894401 has 2 divisors, whose sum is σ = 19010894402. Its totient is φ = 19010894400.

The previous prime is 19010894393. The next prime is 19010894411. The reversal of 19010894401 is 10449801091.

It is a Cunningham number, because it is equal to 137880²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19010894400 + 1 = 137880^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 19010894401 - 2³ = 19010894393 is a prime.

It is a super-2 number, since 2×19010894401² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19010894411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9505447200 + 9505447201.

It is an arithmetic number, because the mean of its divisors is an integer number (9505447201).

Almost surely, 2^19010894401 is an apocalyptic number.

It is an amenable number.

19010894401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19010894401 is an equidigital number, since it uses as much as digits as its factorization.

19010894401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 19010894401 in words is "nineteen billion, ten million, eight hundred ninety-four thousand, four hundred one".