19840272002 has 8 divisors (see below), whose sum is σ = 29871042300. Its totient is φ = 9883257904.

The previous prime is 19840271989. The next prime is 19840272047. The reversal of 19840272002 is 20027204891.

It can be written as a sum of positive squares in 2 ways, for example, as 15368808841 + 4471463161 = 123971^2 + 66869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19840272002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18438377 + ... + 18439452.

Almost surely, 2^19840272002 is an apocalyptic number.

19840272002 is a deficient number, since it is larger than the sum of its proper divisors (10030770298).

19840272002 is a wasteful number, since it uses less digits than its factorization.

19840272002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36878100.

The product of its (nonzero) digits is 16128, while the sum is 35.

Adding to 19840272002 its reverse (20027204891), we get a palindrome (39867476893).

The spelling of 19840272002 in words is "nineteen billion, eight hundred forty million, two hundred seventy-two thousand, two".