19140007 has 4 divisors (see below), whose sum is σ = 19153216. Its totient is φ = 19126800.

The previous prime is 19139999. The next prime is 19140059. The reversal of 19140007 is 70004191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70004191 = 79 ⋅886129.

It is a cyclic number.

It is not a de Polignac number, because 19140007 - 2³ = 19139999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19140007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140097) 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, 4119 + ... + 7432.

It is an arithmetic number, because the mean of its divisors is an integer number (4788304).

Almost surely, 2^19140007 is an apocalyptic number.

19140007 is a deficient number, since it is larger than the sum of its proper divisors (13209).

19140007 is a wasteful number, since it uses less digits than its factorization.

19140007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 19140007 is about 4374.9293708585. The cubic root of 19140007 is about 267.4939911889.

Adding to 19140007 its reverse (70004191), we get a palindrome (89144198).

The spelling of 19140007 in words is "nineteen million, one hundred forty thousand, seven".