818040396 has 24 divisors (see below), whose sum is σ = 1921575600. Its totient is φ = 270849472.

The previous prime is 818040371. The next prime is 818040397. The reversal of 818040396 is 693040818.

It is not an unprimeable number, because it can be changed into a prime (818040397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226971 + ... + 230546.

It is an arithmetic number, because the mean of its divisors is an integer number (80065650).

Almost surely, 2^818040396 is an apocalyptic number.

It is an amenable number.

818040396 is an abundant number, since it is smaller than the sum of its proper divisors (1103535204).

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

818040396 is a wasteful number, since it uses less digits than its factorization.

818040396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457673 (or 457671 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 818040396 is about 28601.4054899405. The cubic root of 818040396 is about 935.2439700032.

The spelling of 818040396 in words is "eight hundred eighteen million, forty thousand, three hundred ninety-six".