19090117 has 4 divisors (see below), whose sum is σ = 20094880. Its totient is φ = 18085356.

The previous prime is 19090103. The next prime is 19090139. The reversal of 19090117 is 71109091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19090117 - 2⁷ = 19089989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19090147) 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 in 3 ways as a sum of consecutive naturals, for example, 502353 + ... + 502390.

It is an arithmetic number, because the mean of its divisors is an integer number (5023720).

Almost surely, 2^19090117 is an apocalyptic number.

It is an amenable number.

19090117 is a deficient number, since it is larger than the sum of its proper divisors (1004763).

19090117 is a wasteful number, since it uses less digits than its factorization.

19090117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004762.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 19090117 is about 4369.2238441169. The cubic root of 19090117 is about 267.2613739416.

The spelling of 19090117 in words is "nineteen million, ninety thousand, one hundred seventeen".