1840761 has 12 divisors (see below), whose sum is σ = 2863588. Its totient is φ = 1132704.

The previous prime is 1840747. The next prime is 1840771. The reversal of 1840761 is 1670481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 1610361 = 480^2 + 1269^2 .

It is not a de Polignac number, because 1840761 - 2⁶ = 1840697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1840711) 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 11 ways as a sum of consecutive naturals, for example, 7750 + ... + 7983.

2^1840761 is an apocalyptic number.

It is an amenable number.

1840761 is a deficient number, since it is larger than the sum of its proper divisors (1022827).

1840761 is a wasteful number, since it uses less digits than its factorization.

1840761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752 (or 15749 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1840761 is about 1356.7464759490. The cubic root of 1840761 is about 122.5554046198. Note that the first 3 decimals are identical.

It can be divided in two parts, 1840 and 761, that added together give a square (2601 = 51²).

The spelling of 1840761 in words is "one million, eight hundred forty thousand, seven hundred sixty-one".