20181608142 has 16 divisors (see below), whose sum is σ = 40931713152. Its totient is φ = 6632453240.

The previous prime is 20181608093. The next prime is 20181608147. The reversal of 20181608142 is 24180618102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20181608147) 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, 23686908 + ... + 23687759.

It is an arithmetic number, because the mean of its divisors is an integer number (2558232072).

Almost surely, 2^20181608142 is an apocalyptic number.

20181608142 is an abundant number, since it is smaller than the sum of its proper divisors (20750105010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20181608142 is a wasteful number, since it uses less digits than its factorization.

20181608142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47374743.

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 20181608142 in words is "twenty billion, one hundred eighty-one million, six hundred eight thousand, one hundred forty-two".