1872841 has 2 divisors, whose sum is σ = 1872842. Its totient is φ = 1872840.

The previous prime is 1872817. The next prime is 1872847. The reversal of 1872841 is 1482781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 335241 = 1240^2 + 579^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872841 - 2⁷ = 1872713 is a prime.

It is a super-2 number, since 2×1872841² = 7015066822562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1872847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936420 + 936421.

It is an arithmetic number, because the mean of its divisors is an integer number (936421).

2^1872841 is an apocalyptic number.

It is an amenable number.

1872841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872841 is an equidigital number, since it uses as much as digits as its factorization.

1872841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 31.

The square root of 1872841 is about 1368.5178113565. The cubic root of 1872841 is about 123.2632561889.

It can be divided in two parts, 18728 and 41, that added together give a square (18769 = 137²).

The spelling of 1872841 in words is "one million, eight hundred seventy-two thousand, eight hundred forty-one".