19134893 has 4 divisors (see below), whose sum is σ = 19148220. Its totient is φ = 19121568.

The previous prime is 19134889. The next prime is 19134923. The reversal of 19134893 is 39843191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39843191 = 37 ⋅1076843.

It can be written as a sum of positive squares in 2 ways, for example, as 10355524 + 8779369 = 3218^2 + 2963^2 .

It is a cyclic number.

It is not a de Polignac number, because 19134893 - 2² = 19134889 is a prime.

It is a super-2 number, since 2×19134893² = 732288260242898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19134803) 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, 4208 + ... + 7481.

It is an arithmetic number, because the mean of its divisors is an integer number (4787055).

Almost surely, 2^19134893 is an apocalyptic number.

It is an amenable number.

19134893 is a deficient number, since it is larger than the sum of its proper divisors (13327).

19134893 is a wasteful number, since it uses less digits than its factorization.

19134893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13326.

The product of its digits is 23328, while the sum is 38.

The square root of 19134893 is about 4374.3448652341. The cubic root of 19134893 is about 267.4701652463.

The spelling of 19134893 in words is "nineteen million, one hundred thirty-four thousand, eight hundred ninety-three".