18001740987 has 24 divisors (see below), whose sum is σ = 26079187680. Its totient is φ = 11965833600.

The previous prime is 18001740979. The next prime is 18001741019. The reversal of 18001740987 is 78904710081.

It is not a de Polignac number, because 18001740987 - 2³ = 18001740979 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18001740287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5102218 + ... + 5105744.

It is an arithmetic number, because the mean of its divisors is an integer number (1086632820).

Almost surely, 2^18001740987 is an apocalyptic number.

18001740987 is a deficient number, since it is larger than the sum of its proper divisors (8077446693).

18001740987 is a wasteful number, since it uses less digits than its factorization.

18001740987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5040 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The spelling of 18001740987 in words is "eighteen billion, one million, seven hundred forty thousand, nine hundred eighty-seven".