1895121 has 24 divisors (see below), whose sum is σ = 2906280. Its totient is φ = 1188096.

The previous prime is 1895119. The next prime is 1895129. The reversal of 1895121 is 1215981.

It can be written as a sum of positive squares in 4 ways, for example, as 540225 + 1354896 = 735^2 + 1164^2 .

It is not a de Polignac number, because 1895121 - 2¹ = 1895119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1895129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13765 + ... + 13901.

It is an arithmetic number, because the mean of its divisors is an integer number (121095).

2^1895121 is an apocalyptic number.

It is an amenable number.

1895121 is a deficient number, since it is larger than the sum of its proper divisors (1011159).

1895121 is a wasteful number, since it uses less digits than its factorization.

1895121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 222 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1895121 is about 1376.6339382712. The cubic root of 1895121 is about 123.7501254973.

It can be divided in two parts, 1895 and 121, that added together give a triangular number (2016 = T₆₃).

The spelling of 1895121 in words is "one million, eight hundred ninety-five thousand, one hundred twenty-one".