8198378051 has 4 divisors (see below), whose sum is σ = 8221603272. Its totient is φ = 8175152832.

The previous prime is 8198377987. The next prime is 8198378053. The reversal of 8198378051 is 1508738918.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8198378051 - 2⁶ = 8198377987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8198378053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11612081 + ... + 11612786.

It is an arithmetic number, because the mean of its divisors is an integer number (2055400818).

Almost surely, 2^8198378051 is an apocalyptic number.

8198378051 is a deficient number, since it is larger than the sum of its proper divisors (23225221).

8198378051 is a wasteful number, since it uses less digits than its factorization.

8198378051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23225220.

The product of its (nonzero) digits is 483840, while the sum is 50.

The square root of 8198378051 is about 90544.8952233090. The cubic root of 8198378051 is about 2016.3967108294.

The spelling of 8198378051 in words is "eight billion, one hundred ninety-eight million, three hundred seventy-eight thousand, fifty-one".