93849621861 has 4 divisors (see below), whose sum is σ = 125132829152. Its totient is φ = 62566414572.

The previous prime is 93849621821. The next prime is 93849621869. The reversal of 93849621861 is 16812694839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16812694839 = 3 ⋅5604231613.

It is not a de Polignac number, because 93849621861 - 2¹⁴ = 93849605477 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 (93849621869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15641603641 + ... + 15641603646.

It is an arithmetic number, because the mean of its divisors is an integer number (31283207288).

Almost surely, 2^93849621861 is an apocalyptic number.

It is an amenable number.

93849621861 is a deficient number, since it is larger than the sum of its proper divisors (31283207291).

93849621861 is a wasteful number, since it uses less digits than its factorization.

93849621861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31283207290.

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

The spelling of 93849621861 in words is "ninety-three billion, eight hundred forty-nine million, six hundred twenty-one thousand, eight hundred sixty-one".