19121029 has 2 divisors, whose sum is σ = 19121030. Its totient is φ = 19121028.

The previous prime is 19120987. The next prime is 19121051. The reversal of 19121029 is 92012191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15000129 + 4120900 = 3873^2 + 2030^2 .

It is an emirp because it is prime and its reverse (92012191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19121029 - 2¹⁵ = 19088261 is a prime.

It is a super-3 number, since 3×19121029³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 19120994 and 19121012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19121329) 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, 9560514 + 9560515.

It is an arithmetic number, because the mean of its divisors is an integer number (9560515).

Almost surely, 2^19121029 is an apocalyptic number.

It is an amenable number.

19121029 is a deficient number, since it is larger than the sum of its proper divisors (1).

19121029 is an equidigital number, since it uses as much as digits as its factorization.

19121029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 19121029 is about 4372.7598836433. The cubic root of 19121029 is about 267.4055520061.

The spelling of 19121029 in words is "nineteen million, one hundred twenty-one thousand, twenty-nine".