1870202002 has 4 divisors (see below), whose sum is σ = 2805303006. Its totient is φ = 935101000.

The previous prime is 1870201999. The next prime is 1870202027. The reversal of 1870202002 is 2002020781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002020781 = 53 ⋅37773977.

It can be written as a sum of positive squares in only one way, i.e., 1338023241 + 532178761 = 36579^2 + 23069^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 467550499 + ... + 467550502.

Almost surely, 2^1870202002 is an apocalyptic number.

1870202002 is a deficient number, since it is larger than the sum of its proper divisors (935101004).

1870202002 is an equidigital number, since it uses as much as digits as its factorization.

1870202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935101003.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1870202002 is about 43245.8321922472. The cubic root of 1870202002 is about 1232.0533271071.

Adding to 1870202002 its reverse (2002020781), we get a palindrome (3872222783).

The spelling of 1870202002 in words is "one billion, eight hundred seventy million, two hundred two thousand, two".