1873864 has 32 divisors (see below), whose sum is σ = 3742200. Its totient is φ = 878080.

The previous prime is 1873849. The next prime is 1873867. The reversal of 1873864 is 4683781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1664100 + 209764 = 1290^2 + 458^2 .

It is a super-2 number, since 2×1873864² = 7022732580992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1873867) 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 in 7 ways as a sum of consecutive naturals, for example, 9414 + ... + 9610.

2^1873864 is an apocalyptic number.

It is an amenable number.

1873864 is a deficient number, since it is larger than the sum of its proper divisors (1868336).

1873864 is a wasteful number, since it uses less digits than its factorization.

1873864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 269 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 1873864 is about 1368.8915223640. The cubic root of 1873864 is about 123.2856954240.

The spelling of 1873864 in words is "one million, eight hundred seventy-three thousand, eight hundred sixty-four".