1868761 has 4 divisors (see below), whose sum is σ = 1872400. Its totient is φ = 1865124.

The previous prime is 1868753. The next prime is 1868777. The reversal of 1868761 is 1678681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1678681 = 31 ⋅54151.

It is a cyclic number.

It is not a de Polignac number, because 1868761 - 2³ = 1868753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868761.

It is not an unprimeable number, because it can be changed into a prime (1868701) 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 3 ways as a sum of consecutive naturals, for example, 891 + ... + 2128.

It is an arithmetic number, because the mean of its divisors is an integer number (468100).

2^1868761 is an apocalyptic number.

It is an amenable number.

1868761 is a deficient number, since it is larger than the sum of its proper divisors (3639).

1868761 is an equidigital number, since it uses as much as digits as its factorization.

1868761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638.

The product of its digits is 16128, while the sum is 37.

The square root of 1868761 is about 1367.0263347866. The cubic root of 1868761 is about 123.1736810944.

The spelling of 1868761 in words is "one million, eight hundred sixty-eight thousand, seven hundred sixty-one".