1872545 has 16 divisors (see below), whose sum is σ = 2471040. Its totient is φ = 1355904.

The previous prime is 1872529. The next prime is 1872547. The reversal of 1872545 is 5452781.

It is a cyclic number.

It is not a de Polignac number, because 1872545 - 2⁴ = 1872529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1872547) 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, 1757 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^1872545 is an apocalyptic number.

It is an amenable number.

1872545 is a deficient number, since it is larger than the sum of its proper divisors (598495).

1872545 is a wasteful number, since it uses less digits than its factorization.

1872545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its digits is 11200, while the sum is 32.

The square root of 1872545 is about 1368.4096608838. The cubic root of 1872545 is about 123.2567619828.

The spelling of 1872545 in words is "one million, eight hundred seventy-two thousand, five hundred forty-five".