19128045 has 8 divisors (see below), whose sum is σ = 30604896. Its totient is φ = 10201616.

The previous prime is 19128007. The next prime is 19128047. The reversal of 19128045 is 54082191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19128045 - 2⁶ = 19127981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19128047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637587 + ... + 637616.

It is an arithmetic number, because the mean of its divisors is an integer number (3825612).

Almost surely, 2^19128045 is an apocalyptic number.

19128045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19128045 is a deficient number, since it is larger than the sum of its proper divisors (11476851).

19128045 is a wasteful number, since it uses less digits than its factorization.

19128045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275211.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 19128045 is about 4373.5620494055. The cubic root of 19128045 is about 267.4382540107.

The spelling of 19128045 in words is "nineteen million, one hundred twenty-eight thousand, forty-five".