7898943867 has 16 divisors (see below), whose sum is σ = 10887972480. Its totient is φ = 5090464512.

The previous prime is 7898943859. The next prime is 7898943893. The reversal of 7898943867 is 7683498987.

It is not a de Polignac number, because 7898943867 - 2³ = 7898943859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7898943067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303117 + ... + 328142.

It is an arithmetic number, because the mean of its divisors is an integer number (680498280).

Almost surely, 2^7898943867 is an apocalyptic number.

7898943867 is a deficient number, since it is larger than the sum of its proper divisors (2989028613).

7898943867 is a wasteful number, since it uses less digits than its factorization.

7898943867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631402.

The product of its digits is 146313216, while the sum is 69.

The square root of 7898943867 is about 88876.0027622755. The cubic root of 7898943867 is about 1991.5429450998.

The spelling of 7898943867 in words is "seven billion, eight hundred ninety-eight million, nine hundred forty-three thousand, eight hundred sixty-seven".