1418881 has 2 divisors, whose sum is σ = 1418882. Its totient is φ = 1418880.

The previous prime is 1418873. The next prime is 1418917. The reversal of 1418881 is 1888141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 400 = 1191^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 1418881 - 2³ = 1418873 is a prime.

It is a super-2 number, since 2×1418881² = 4026446584322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1418831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 709440 + 709441.

It is an arithmetic number, because the mean of its divisors is an integer number (709441).

2^1418881 is an apocalyptic number.

It is an amenable number.

1418881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1418881 is an equidigital number, since it uses as much as digits as its factorization.

1418881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 31.

The square root of 1418881 is about 1191.1679142757. The cubic root of 1418881 is about 112.3695541539.

The spelling of 1418881 in words is "one million, four hundred eighteen thousand, eight hundred eighty-one".