7891112002 has 4 divisors (see below), whose sum is σ = 11836668006. Its totient is φ = 3945556000.

The previous prime is 7891111993. The next prime is 7891112017. The reversal of 7891112002 is 2002111987.

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., 5766731721 + 2124380281 = 75939^2 + 46091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972777999 + ... + 1972778002.

Almost surely, 2^7891112002 is an apocalyptic number.

7891112002 is a deficient number, since it is larger than the sum of its proper divisors (3945556004).

7891112002 is a wasteful number, since it uses less digits than its factorization.

7891112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945556003.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 7891112002 is about 88831.9312071960. The cubic root of 7891112002 is about 1990.8845172727.

Adding to 7891112002 its reverse (2002111987), we get a palindrome (9893223989).

The spelling of 7891112002 in words is "seven billion, eight hundred ninety-one million, one hundred twelve thousand, two".