1868888093 has 8 divisors (see below), whose sum is σ = 1985585880. Its totient is φ = 1755673920.

The previous prime is 1868888029. The next prime is 1868888101. The reversal of 1868888093 is 3908888681.

It can be written as a sum of positive squares in 4 ways, for example, as 755865049 + 1113023044 = 27493^2 + 33362^2 .

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

It is not a de Polignac number, because 1868888093 - 2⁶ = 1868888029 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 (1868888993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869798 + ... + 871943.

It is an arithmetic number, because the mean of its divisors is an integer number (248198235).

Almost surely, 2^1868888093 is an apocalyptic number.

It is an amenable number.

1868888093 is a deficient number, since it is larger than the sum of its proper divisors (116697787).

1868888093 is a wasteful number, since it uses less digits than its factorization.

1868888093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741807.

The product of its (nonzero) digits is 5308416, while the sum is 59.

The square root of 1868888093 is about 43230.6383598484. The cubic root of 1868888093 is about 1231.7647334689.

The spelling of 1868888093 in words is "one billion, eight hundred sixty-eight million, eight hundred eighty-eight thousand, ninety-three".