1868891874 has 8 divisors (see below), whose sum is σ = 3737783760. Its totient is φ = 622963956.

The previous prime is 1868891819. The next prime is 1868891881. The reversal of 1868891874 is 4781988681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1868891874 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155740984 + ... + 155740995.

It is an arithmetic number, because the mean of its divisors is an integer number (467222970).

Almost surely, 2^1868891874 is an apocalyptic number.

1868891874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868891874 is a wasteful number, since it uses less digits than its factorization.

1868891874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311481984.

The product of its digits is 6193152, while the sum is 60.

The square root of 1868891874 is about 43230.6820903858. The cubic root of 1868891874 is about 1231.7655641410.

The spelling of 1868891874 in words is "one billion, eight hundred sixty-eight million, eight hundred ninety-one thousand, eight hundred seventy-four".