1868938293 has 8 divisors (see below), whose sum is σ = 2492347456. Its totient is φ = 1245744000.

The previous prime is 1868938273. The next prime is 1868938303. The reversal of 1868938293 is 3928398681.

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

It is not a de Polignac number, because 1868938293 - 2⁶ = 1868938229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868938243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32188 + ... + 69093.

It is an arithmetic number, because the mean of its divisors is an integer number (311543432).

Almost surely, 2^1868938293 is an apocalyptic number.

It is an amenable number.

1868938293 is a deficient number, since it is larger than the sum of its proper divisors (623409163).

1868938293 is a wasteful number, since it uses less digits than its factorization.

1868938293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107435.

The product of its digits is 4478976, while the sum is 57.

The square root of 1868938293 is about 43231.2189626895. The cubic root of 1868938293 is about 1231.7757621364.

The spelling of 1868938293 in words is "one billion, eight hundred sixty-eight million, nine hundred thirty-eight thousand, two hundred ninety-three".