8145198701 has 4 divisors (see below), whose sum is σ = 8145544512. Its totient is φ = 8144852892.

The previous prime is 8145198683. The next prime is 8145198731. The reversal of 8145198701 is 1078915418.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8145198701 - 2³⁰ = 7071456877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145198731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134771 + ... + 185616.

It is an arithmetic number, because the mean of its divisors is an integer number (2036386128).

Almost surely, 2^8145198701 is an apocalyptic number.

It is an amenable number.

8145198701 is a deficient number, since it is larger than the sum of its proper divisors (345811).

8145198701 is a wasteful number, since it uses less digits than its factorization.

8145198701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345810.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 8145198701 is about 90250.7545730228. The cubic root of 8145198701 is about 2012.0274173763.

The spelling of 8145198701 in words is "eight billion, one hundred forty-five million, one hundred ninety-eight thousand, seven hundred one".