815343378 has 8 divisors (see below), whose sum is σ = 1630686768. Its totient is φ = 271781124.

The previous prime is 815343349. The next prime is 815343401. The reversal of 815343378 is 873343518.

It is a sphenic number, since it is the product of 3 distinct primes.

815343378 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67945276 + ... + 67945287.

It is an arithmetic number, because the mean of its divisors is an integer number (203835846).

Almost surely, 2^815343378 is an apocalyptic number.

815343378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

815343378 is a wasteful number, since it uses less digits than its factorization.

815343378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135890568.

The product of its digits is 241920, while the sum is 42.

The square root of 815343378 is about 28554.2182172792. The cubic root of 815343378 is about 934.2150285866.

The spelling of 815343378 in words is "eight hundred fifteen million, three hundred forty-three thousand, three hundred seventy-eight".