18585420524 has 24 divisors (see below), whose sum is σ = 35795260368. Its totient is φ = 8373155840.

The previous prime is 18585420523. The next prime is 18585420563. The reversal of 18585420524 is 42502458581.

It is a super-3 number, since 3×18585420524³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (18585420521) 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, 1864037 + ... + 1873980.

It is an arithmetic number, because the mean of its divisors is an integer number (1491469182).

Almost surely, 2^18585420524 is an apocalyptic number.

It is an amenable number.

18585420524 is a deficient number, since it is larger than the sum of its proper divisors (17209839844).

18585420524 is a wasteful number, since it uses less digits than its factorization.

18585420524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738145 (or 3738143 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 44.

The spelling of 18585420524 in words is "eighteen billion, five hundred eighty-five million, four hundred twenty thousand, five hundred twenty-four".