1879945 has 12 divisors (see below), whose sum is σ = 2398284. Its totient is φ = 1414400.

The previous prime is 1879939. The next prime is 1879949. The reversal of 1879945 is 5499781.

It can be written as a sum of positive squares in 6 ways, for example, as 41209 + 1838736 = 203^2 + 1356^2 .

It is not a de Polignac number, because 1879945 - 2³ = 1879937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1879949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 795 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (199857).

2^1879945 is an apocalyptic number.

It is an amenable number.

1879945 is a deficient number, since it is larger than the sum of its proper divisors (518339).

1879945 is a wasteful number, since it uses less digits than its factorization.

1879945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1323 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 1879945 is about 1371.1108634972. The cubic root of 1879945 is about 123.4189122788.

The spelling of 1879945 in words is "one million, eight hundred seventy-nine thousand, nine hundred forty-five".