18850406487 has 16 divisors (see below), whose sum is σ = 27421979520. Its totient is φ = 11423152800.

The previous prime is 18850406467. The next prime is 18850406501. The reversal of 18850406487 is 78460405881.

It is not a de Polignac number, because 18850406487 - 2¹⁰ = 18850405463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18850406467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303912 + ... + 360642.

It is an arithmetic number, because the mean of its divisors is an integer number (1713873720).

Almost surely, 2^18850406487 is an apocalyptic number.

18850406487 is a deficient number, since it is larger than the sum of its proper divisors (8571573033).

18850406487 is a wasteful number, since it uses less digits than its factorization.

18850406487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66814.

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 18850406487 in words is "eighteen billion, eight hundred fifty million, four hundred six thousand, four hundred eighty-seven".