396000018 has 12 divisors (see below), whose sum is σ = 858000078. Its totient is φ = 132000000.

The previous prime is 395999987. The next prime is 396000037. The reversal of 396000018 is 810000693.

It can be written as a sum of positive squares in only one way, i.e., 388365849 + 7634169 = 19707^2 + 2763^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 395999955 and 396000000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10999983 + ... + 11000018.

Almost surely, 2^396000018 is an apocalyptic number.

396000018 is an abundant number, since it is smaller than the sum of its proper divisors (462000060).

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

396000018 is a wasteful number, since it uses less digits than its factorization.

396000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22000009 (or 22000006 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 396000018 is about 19899.7491943994. The cubic root of 396000018 is about 734.3420573314.

The spelling of 396000018 in words is "three hundred ninety-six million, eighteen", and thus it is an aban number.