1818407325548 has 24 divisors (see below), whose sum is σ = 3523318405824. Its totient is φ = 814212234000.

The previous prime is 1818407325499. The next prime is 1818407325557. The reversal of 1818407325548 is 8455237048181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1818407325493 and 1818407325502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308410778 + ... + 308416673.

It is an arithmetic number, because the mean of its divisors is an integer number (146804933576).

Almost surely, 2^{1818407325548} is an apocalyptic number.

It is an amenable number.

1818407325548 is a deficient number, since it is larger than the sum of its proper divisors (1704911080276).

1818407325548 is a wasteful number, since it uses less digits than its factorization.

1818407325548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616827533 (or 616827531 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 56.

The spelling of 1818407325548 in words is "one trillion, eight hundred eighteen billion, four hundred seven million, three hundred twenty-five thousand, five hundred forty-eight".