1868685017 has 4 divisors (see below), whose sum is σ = 1967036880. Its totient is φ = 1770333156.

The previous prime is 1868685011. The next prime is 1868685043. The reversal of 1868685017 is 7105868681.

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: 7105868681 = 523 ⋅13586747.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868685017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868685011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49175903 + ... + 49175940.

It is an arithmetic number, because the mean of its divisors is an integer number (491759220).

Almost surely, 2^1868685017 is an apocalyptic number.

It is an amenable number.

1868685017 is a deficient number, since it is larger than the sum of its proper divisors (98351863).

1868685017 is an equidigital number, since it uses as much as digits as its factorization.

1868685017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98351862.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 1868685017 is about 43228.2895451578. The cubic root of 1868685017 is about 1231.7201167586.

The spelling of 1868685017 in words is "one billion, eight hundred sixty-eight million, six hundred eighty-five thousand, seventeen".