1860345 has 12 divisors (see below), whose sum is σ = 3224676. Its totient is φ = 992160.

The previous prime is 1860343. The next prime is 1860359. The reversal of 1860345 is 5430681.

1860345 is a `hidden beast` number, since 18 + 603 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 484416 + 1375929 = 696^2 + 1173^2 .

It is not a de Polignac number, because 1860345 - 2¹ = 1860343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1860343) 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, 20626 + ... + 20715.

It is an arithmetic number, because the mean of its divisors is an integer number (268723).

2^1860345 is an apocalyptic number.

1860345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1860345 is a deficient number, since it is larger than the sum of its proper divisors (1364331).

1860345 is a wasteful number, since it uses less digits than its factorization.

1860345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41352 (or 41349 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1860345 is about 1363.9446469707. The cubic root of 1860345 is about 122.9884978338.

Adding to 1860345 its product of nonzero digits (2880), we get a square (1863225 = 1365²).

The spelling of 1860345 in words is "one million, eight hundred sixty thousand, three hundred forty-five".