87920185493 has 8 divisors (see below), whose sum is σ = 100482049920. Its totient is φ = 75358780560.

The previous prime is 87920185481. The next prime is 87920185499. The reversal of 87920185493 is 39458102978.

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

It is not a de Polignac number, because 87920185493 - 2⁸ = 87920185237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87920185499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557648 + ... + 697718.

It is an arithmetic number, because the mean of its divisors is an integer number (12560256240).

Almost surely, 2^87920185493 is an apocalyptic number.

It is an amenable number.

87920185493 is a deficient number, since it is larger than the sum of its proper divisors (12561864427).

87920185493 is a wasteful number, since it uses less digits than its factorization.

87920185493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229747.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 87920185493 in words is "eighty-seven billion, nine hundred twenty million, one hundred eighty-five thousand, four hundred ninety-three".