1858240093 has 4 divisors (see below), whose sum is σ = 1858907260. Its totient is φ = 1857572928.

The previous prime is 1858240067. The next prime is 1858240123. The reversal of 1858240093 is 3900428581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1713711609 + 144528484 = 41397^2 + 12022^2 .

It is a cyclic number.

It is not a de Polignac number, because 1858240093 - 2⁵ = 1858240061 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 (1858240193) 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 3 ways as a sum of consecutive naturals, for example, 329388 + ... + 334981.

It is an arithmetic number, because the mean of its divisors is an integer number (464726815).

Almost surely, 2^1858240093 is an apocalyptic number.

It is an amenable number.

1858240093 is a deficient number, since it is larger than the sum of its proper divisors (667167).

1858240093 is an equidigital number, since it uses as much as digits as its factorization.

1858240093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667166.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1858240093 is about 43107.3090438269. The cubic root of 1858240093 is about 1229.4209478335.

The spelling of 1858240093 in words is "one billion, eight hundred fifty-eight million, two hundred forty thousand, ninety-three".