19226111488081 has 27 divisors (see below), whose sum is σ = 20993504523537. Its totient is φ = 17603579652480.

The previous prime is 19226111487977. The next prime is 19226111488091. The reversal of 19226111488081 is 18088411162291.

It is a happy number.

The square root of 19226111488081 is 4384759.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8943443132481 + 10282668355600 = 2990559^2 + 3206660^2 .

It is not a de Polignac number, because 19226111488081 - 2¹⁷ = 19226111357009 is a prime.

It is a super-2 number, since 2×19226111488081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19226111488091) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2758009926 + ... + 2758016896.

Almost surely, 2^{19226111488081} is an apocalyptic number.

19226111488081 is the 4384759-th square number.

19226111488081 is the 2192380-th centered octagonal number.

It is an amenable number.

19226111488081 is a deficient number, since it is larger than the sum of its proper divisors (1767393035456).

19226111488081 is an frugal number, since it uses more digits than its factorization.

19226111488081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14050 (or 7025 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 52.

The spelling of 19226111488081 in words is "nineteen trillion, two hundred twenty-six billion, one hundred eleven million, four hundred eighty-eight thousand, eighty-one".