1918055 has 4 divisors (see below), whose sum is σ = 2301672. Its totient is φ = 1534440.

The previous prime is 1918027. The next prime is 1918067. The reversal of 1918055 is 5508191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5508191 = 13 ⋅423707.

It is not a de Polignac number, because 1918055 - 2¹² = 1913959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191801 + ... + 191810.

It is an arithmetic number, because the mean of its divisors is an integer number (575418).

2^1918055 is an apocalyptic number.

1918055 is a deficient number, since it is larger than the sum of its proper divisors (383617).

1918055 is an equidigital number, since it uses as much as digits as its factorization.

1918055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383616.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1918055 is about 1384.9386267990. The cubic root of 1918055 is about 124.2473168414.

The spelling of 1918055 in words is "one million, nine hundred eighteen thousand, fifty-five".