1818448201 has 4 divisors (see below), whose sum is σ = 1835443152. Its totient is φ = 1801453252.

The previous prime is 1818448193. The next prime is 1818448207. The reversal of 1818448201 is 1028448181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1818448201 - 2³ = 1818448193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818448207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8497315 + ... + 8497528.

It is an arithmetic number, because the mean of its divisors is an integer number (458860788).

Almost surely, 2^1818448201 is an apocalyptic number.

It is an amenable number.

1818448201 is a deficient number, since it is larger than the sum of its proper divisors (16994951).

1818448201 is a wasteful number, since it uses less digits than its factorization.

1818448201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16994950.

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 1818448201 is about 42643.2667721412. The cubic root of 1818448201 is about 1220.5820480311.

The spelling of 1818448201 in words is "one billion, eight hundred eighteen million, four hundred forty-eight thousand, two hundred one".