18387144741 has 16 divisors (see below), whose sum is σ = 28175040000. Its totient is φ = 10448239728.

The previous prime is 18387144719. The next prime is 18387144751. The reversal of 18387144741 is 14744178381.

It is not a de Polignac number, because 18387144741 - 2⁹ = 18387144229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18387144751) 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, 2441991 + ... + 2449508.

It is an arithmetic number, because the mean of its divisors is an integer number (1760940000).

Almost surely, 2^18387144741 is an apocalyptic number.

It is an amenable number.

18387144741 is a deficient number, since it is larger than the sum of its proper divisors (9787895259).

18387144741 is a wasteful number, since it uses less digits than its factorization.

18387144741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891688.

The product of its digits is 602112, while the sum is 48.

The spelling of 18387144741 in words is "eighteen billion, three hundred eighty-seven million, one hundred forty-four thousand, seven hundred forty-one".