19140207 has 16 divisors (see below), whose sum is σ = 25989600. Its totient is φ = 12528000.

The previous prime is 19140197. The next prime is 19140221. The reversal of 19140207 is 70204191.

It is not a de Polignac number, because 19140207 - 2¹² = 19136111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54669 + ... + 55017.

It is an arithmetic number, because the mean of its divisors is an integer number (1624350).

Almost surely, 2^19140207 is an apocalyptic number.

19140207 is a deficient number, since it is larger than the sum of its proper divisors (6849393).

19140207 is a wasteful number, since it uses less digits than its factorization.

19140207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 19140207 is about 4374.9522283106. The cubic root of 19140207 is about 267.4949228955.

Adding to 19140207 its reverse (70204191), we get a palindrome (89344398).

The spelling of 19140207 in words is "nineteen million, one hundred forty thousand, two hundred seven".