396618023522 has 18 divisors (see below), whose sum is σ = 692068858497. Its totient is φ = 169976481024.

The previous prime is 396618023437. The next prime is 396618023537. The reversal of 396618023522 is 225320816693.

It can be written as a sum of positive squares in 2 ways, for example, as 394988367361 + 1629656161 = 628481^2 + 40369^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=445319.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6202658 + ... + 6266274.

Almost surely, 2^396618023522 is an apocalyptic number.

396618023522 is a deficient number, since it is larger than the sum of its proper divisors (295450834975).

396618023522 is an frugal number, since it uses more digits than its factorization.

396618023522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127250 (or 63626 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 396618023522 in words is "three hundred ninety-six billion, six hundred eighteen million, twenty-three thousand, five hundred twenty-two".