1894881 has 16 divisors (see below), whose sum is σ = 2661824. Its totient is φ = 1197504.

The previous prime is 1894873. The next prime is 1894883. The reversal of 1894881 is 1884981.

It is a happy number.

It is not a de Polignac number, because 1894881 - 2³ = 1894873 is a prime.

It is a super-2 number, since 2×1894881² = 7181148008322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1894881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1894883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4575 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (166364).

2^1894881 is an apocalyptic number.

It is an amenable number.

1894881 is a deficient number, since it is larger than the sum of its proper divisors (766943).

1894881 is a wasteful number, since it uses less digits than its factorization.

1894881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its digits is 18432, while the sum is 39.

The square root of 1894881 is about 1376.5467663687. The cubic root of 1894881 is about 123.7449013306.

It can be divided in two parts, 1894 and 881, that added together give a triangular number (2775 = T₇₄).

The spelling of 1894881 in words is "one million, eight hundred ninety-four thousand, eight hundred eighty-one".