19166113 has 2 divisors, whose sum is σ = 19166114. Its totient is φ = 19166112.

The previous prime is 19166099. The next prime is 19166131. The reversal of 19166113 is 31166191.

Together with next prime (19166131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10969344 + 8196769 = 3312^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 19166113 - 2¹³ = 19157921 is a prime.

It is a super-3 number, since 3×19166113³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (19166143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9583056 + 9583057.

It is an arithmetic number, because the mean of its divisors is an integer number (9583057).

Almost surely, 2^19166113 is an apocalyptic number.

It is an amenable number.

19166113 is a deficient number, since it is larger than the sum of its proper divisors (1).

19166113 is an equidigital number, since it uses as much as digits as its factorization.

19166113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 19166113 is about 4377.9119452086. The cubic root of 19166113 is about 267.6155520226.

The spelling of 19166113 in words is "nineteen million, one hundred sixty-six thousand, one hundred thirteen".