1867660825 has 12 divisors (see below), whose sum is σ = 2320937388. Its totient is φ = 1490878400.

The previous prime is 1867660801. The next prime is 1867660867. The reversal of 1867660825 is 5280667681.

It can be written as a sum of positive squares in 6 ways, for example, as 48553024 + 1819107801 = 6968^2 + 42651^2 .

It is not a de Polignac number, because 1867660825 - 2⁹ = 1867660313 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 11 ways as a sum of consecutive naturals, for example, 69502 + ... + 92551.

It is an arithmetic number, because the mean of its divisors is an integer number (193411449).

Almost surely, 2^1867660825 is an apocalyptic number.

It is an amenable number.

1867660825 is a deficient number, since it is larger than the sum of its proper divisors (453276563).

1867660825 is a wasteful number, since it uses less digits than its factorization.

1867660825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162524 (or 162519 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 1867660825 is about 43216.4416050188. The cubic root of 1867660825 is about 1231.4950478964.

The spelling of 1867660825 in words is "one billion, eight hundred sixty-seven million, six hundred sixty thousand, eight hundred twenty-five".