19140202 has 4 divisors (see below), whose sum is σ = 28710306. Its totient is φ = 9570100.

The previous prime is 19140197. The next prime is 19140221. The reversal of 19140202 is 20204191.

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

It can be written as a sum of positive squares in only one way, i.e., 18498601 + 641601 = 4301^2 + 801^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19140202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4785049 + ... + 4785052.

Almost surely, 2^19140202 is an apocalyptic number.

19140202 is a deficient number, since it is larger than the sum of its proper divisors (9570104).

19140202 is an equidigital number, since it uses as much as digits as its factorization.

19140202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570103.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 19140202 is about 4374.9516568758. The cubic root of 19140202 is about 267.4948996029.

Adding to 19140202 its reverse (20204191), we get a palindrome (39344393).

The spelling of 19140202 in words is "nineteen million, one hundred forty thousand, two hundred two".