1868773825 has 6 divisors (see below), whose sum is σ = 2317279574. Its totient is φ = 1495019040.

The previous prime is 1868773817. The next prime is 1868773843. The reversal of 1868773825 is 5283778681.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 14265729 + 1854508096 = 3777^2 + 43064^2 .

It is not a de Polignac number, because 1868773825 - 2³ = 1868773817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37375452 + ... + 37375501.

Almost surely, 2^1868773825 is an apocalyptic number.

It is an amenable number.

1868773825 is a deficient number, since it is larger than the sum of its proper divisors (448505749).

1868773825 is an equidigital number, since it uses as much as digits as its factorization.

1868773825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74750963 (or 74750958 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The square root of 1868773825 is about 43229.3167306632. The cubic root of 1868773825 is about 1231.7396286732.

The spelling of 1868773825 in words is "one billion, eight hundred sixty-eight million, seven hundred seventy-three thousand, eight hundred twenty-five".