819463361 has 4 divisors (see below), whose sum is σ = 819758724. Its totient is φ = 819168000.

The previous prime is 819463357. The next prime is 819463367. The reversal of 819463361 is 163364918.

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

It can be written as a sum of positive squares in 2 ways, for example, as 667705600 + 151757761 = 25840^2 + 12319^2 .

It is a cyclic number.

It is not a de Polignac number, because 819463361 - 2² = 819463357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (819463367) 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, 143480 + ... + 149081.

It is an arithmetic number, because the mean of its divisors is an integer number (204939681).

Almost surely, 2^819463361 is an apocalyptic number.

It is an amenable number.

819463361 is a deficient number, since it is larger than the sum of its proper divisors (295363).

819463361 is a wasteful number, since it uses less digits than its factorization.

819463361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295362.

The product of its digits is 93312, while the sum is 41.

The square root of 819463361 is about 28626.2704696228. The cubic root of 819463361 is about 935.7859353073.

The spelling of 819463361 in words is "eight hundred nineteen million, four hundred sixty-three thousand, three hundred sixty-one".