1888855 has 4 divisors (see below), whose sum is σ = 2266632. Its totient is φ = 1511080.

The previous prime is 1888849. The next prime is 1888879. The reversal of 1888855 is 5588881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5588881 = 61 ⋅91621.

It is not a de Polignac number, because 1888855 - 2⁷ = 1888727 is a prime.

It is a super-2 number, since 2×1888855² = 7135546422050, which contains 22 as substring.

It is a Duffinian number.

1888855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188881 + ... + 188890.

It is an arithmetic number, because the mean of its divisors is an integer number (566658).

2^1888855 is an apocalyptic number.

1888855 is a deficient number, since it is larger than the sum of its proper divisors (377777).

1888855 is an equidigital number, since it uses as much as digits as its factorization.

1888855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377776.

The product of its digits is 102400, while the sum is 43.

The square root of 1888855 is about 1374.3562129230. The cubic root of 1888855 is about 123.6135863756.

The spelling of 1888855 in words is "one million, eight hundred eighty-eight thousand, eight hundred fifty-five".