1868342783 has 4 divisors (see below), whose sum is σ = 1868429640. Its totient is φ = 1868255928.

The previous prime is 1868342779. The next prime is 1868342797. The reversal of 1868342783 is 3872438681.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1868342783 - 2² = 1868342779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868347783) 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, 15413 + ... + 63041.

It is an arithmetic number, because the mean of its divisors is an integer number (467107410).

Almost surely, 2^1868342783 is an apocalyptic number.

1868342783 is a deficient number, since it is larger than the sum of its proper divisors (86857).

1868342783 is an equidigital number, since it uses as much as digits as its factorization.

1868342783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86856.

The product of its digits is 1548288, while the sum is 50.

The square root of 1868342783 is about 43224.3309144283. The cubic root of 1868342783 is about 1231.6449190956.

The spelling of 1868342783 in words is "one billion, eight hundred sixty-eight million, three hundred forty-two thousand, seven hundred eighty-three".