1818368545 has 8 divisors (see below), whose sum is σ = 2493762624. Its totient is φ = 1246881264.

The previous prime is 1818368521. The next prime is 1818368561. The reversal of 1818368545 is 5458638181.

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

It is a cyclic number.

It is not a de Polignac number, because 1818368545 - 2⁹ = 1818368033 is a prime.

It is a Duffinian number.

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, 25976659 + ... + 25976728.

It is an arithmetic number, because the mean of its divisors is an integer number (311720328).

Almost surely, 2^1818368545 is an apocalyptic number.

It is an amenable number.

1818368545 is a deficient number, since it is larger than the sum of its proper divisors (675394079).

1818368545 is an equidigital number, since it uses as much as digits as its factorization.

1818368545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51953399.

The product of its digits is 921600, while the sum is 49.

The square root of 1818368545 is about 42642.3327809350. The cubic root of 1818368545 is about 1220.5642254900.

The spelling of 1818368545 in words is "one billion, eight hundred eighteen million, three hundred sixty-eight thousand, five hundred forty-five".