2018451 has 4 divisors (see below), whose sum is σ = 2691272. Its totient is φ = 1345632.

The previous prime is 2018447. The next prime is 2018453. The reversal of 2018451 is 1548102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2018451 - 2² = 2018447 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018453) 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, 336406 + ... + 336411.

It is an arithmetic number, because the mean of its divisors is an integer number (672818).

2^2018451 is an apocalyptic number.

2018451 is a deficient number, since it is larger than the sum of its proper divisors (672821).

2018451 is an equidigital number, since it uses as much as digits as its factorization.

2018451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672820.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2018451 is about 1420.7219995481. The cubic root of 2018451 is about 126.3783663170.

The spelling of 2018451 in words is "two million, eighteen thousand, four hundred fifty-one".