812194368 has 112 divisors (see below), whose sum is σ = 2296485120. Its totient is φ = 252578304.

The previous prime is 812194351. The next prime is 812194391. The reversal of 812194368 is 863491218.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242755 + ... + 246077.

Almost surely, 2^812194368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812194368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148242560).

812194368 is an abundant number, since it is smaller than the sum of its proper divisors (1484290752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812194368 is a wasteful number, since it uses less digits than its factorization.

812194368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3414 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 812194368 is about 28499.0239832876. The cubic root of 812194368 is about 933.0107719819.

The spelling of 812194368 in words is "eight hundred twelve million, one hundred ninety-four thousand, three hundred sixty-eight".