813198151 has 4 divisors (see below), whose sum is σ = 813278232. Its totient is φ = 813118072.

The previous prime is 813198149. The next prime is 813198203. The reversal of 813198151 is 151891318.

813198151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 151891318 = 2 ⋅75945659.

It is a cyclic number.

It is not a de Polignac number, because 813198151 - 2¹ = 813198149 is a prime.

It is a super-3 number, since 3×813198151³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 813198151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813190151) 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, 22141 + ... + 46006.

It is an arithmetic number, because the mean of its divisors is an integer number (203319558).

Almost surely, 2^813198151 is an apocalyptic number.

813198151 is the 18036-th centered pentagonal number.

813198151 is a deficient number, since it is larger than the sum of its proper divisors (80081).

813198151 is a wasteful number, since it uses less digits than its factorization.

813198151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80080.

The product of its digits is 8640, while the sum is 37.

The square root of 813198151 is about 28516.6293765585. The cubic root of 813198151 is about 933.3949800126.

The spelling of 813198151 in words is "eight hundred thirteen million, one hundred ninety-eight thousand, one hundred fifty-one".