1872049 has 2 divisors, whose sum is σ = 1872050. Its totient is φ = 1872048.

The previous prime is 1872043. The next prime is 1872097. The reversal of 1872049 is 9402781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1871424 + 625 = 1368^2 + 25^2 .

It is an emirp because it is prime and its reverse (9402781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1872049 - 2¹³ = 1863857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1872049.

It is not a weakly prime, because it can be changed into another prime (1872043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936024 + 936025.

It is an arithmetic number, because the mean of its divisors is an integer number (936025).

2^1872049 is an apocalyptic number.

It is an amenable number.

1872049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872049 is an equidigital number, since it uses as much as digits as its factorization.

1872049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1872049 is about 1368.2284166030. The cubic root of 1872049 is about 123.2458782653.

It can be divided in two parts, 18720 and 49, that added together give a square (18769 = 137²).

The spelling of 1872049 in words is "one million, eight hundred seventy-two thousand, forty-nine".