19072135 has 4 divisors (see below), whose sum is σ = 22886568. Its totient is φ = 15257704.

The previous prime is 19072121. The next prime is 19072139. The reversal of 19072135 is 53127091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19072135 - 2¹¹ = 19070087 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 (19072139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1907209 + ... + 1907218.

It is an arithmetic number, because the mean of its divisors is an integer number (5721642).

Almost surely, 2^19072135 is an apocalyptic number.

19072135 is a deficient number, since it is larger than the sum of its proper divisors (3814433).

19072135 is an equidigital number, since it uses as much as digits as its factorization.

19072135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814432.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 19072135 is about 4367.1655567427. The cubic root of 19072135 is about 267.1774316624.

The spelling of 19072135 in words is "nineteen million, seventy-two thousand, one hundred thirty-five".