19130000002 has 4 divisors (see below), whose sum is σ = 28695000006. Its totient is φ = 9565000000.

The previous prime is 19129999991. The next prime is 19130000009. The reversal of 19130000002 is 20000003191.

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., 19038204441 + 91795561 = 137979^2 + 9581^2 .

It is not an unprimeable number, because it can be changed into a prime (19130000009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4782499999 + ... + 4782500002.

Almost surely, 2^19130000002 is an apocalyptic number.

19130000002 is a deficient number, since it is larger than the sum of its proper divisors (9565000004).

19130000002 is an equidigital number, since it uses as much as digits as its factorization.

19130000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565000003.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 19130000002 its reverse (20000003191), we get a palindrome (39130003193).

The spelling of 19130000002 in words is "nineteen billion, one hundred thirty million, two", and thus it is an aban number.