18400848487 has 8 divisors (see below), whose sum is σ = 21518600576. Its totient is φ = 15405361272.

The previous prime is 18400848469. The next prime is 18400848497. The reversal of 18400848487 is 78484800481.

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

It is not a de Polignac number, because 18400848487 - 2¹¹ = 18400846439 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 (18400848497) 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, 30565893 + ... + 30566494.

It is an arithmetic number, because the mean of its divisors is an integer number (2689825072).

Almost surely, 2^18400848487 is an apocalyptic number.

18400848487 is a deficient number, since it is larger than the sum of its proper divisors (3117752089).

18400848487 is an equidigital number, since it uses as much as digits as its factorization.

18400848487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61132437.

The product of its (nonzero) digits is 1835008, while the sum is 52.

The spelling of 18400848487 in words is "eighteen billion, four hundred million, eight hundred forty-eight thousand, four hundred eighty-seven".