2016445642 has 12 divisors (see below), whose sum is σ = 3192241266. Its totient is φ = 955158120.

The previous prime is 2016445567. The next prime is 2016445649. The reversal of 2016445642 is 2465446102.

It can be written as a sum of positive squares in only one way, i.e., 1748828761 + 267616881 = 41819^2 + 16359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2016445598 and 2016445607.

It is not an unprimeable number, because it can be changed into a prime (2016445649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1395709 + ... + 1397152.

Almost surely, 2^2016445642 is an apocalyptic number.

2016445642 is a deficient number, since it is larger than the sum of its proper divisors (1175795624).

2016445642 is a wasteful number, since it uses less digits than its factorization.

2016445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792901 (or 2792882 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 2016445642 is about 44904.8509851664. The cubic root of 2016445642 is about 1263.3649958454.

The spelling of 2016445642 in words is "two billion, sixteen million, four hundred forty-five thousand, six hundred forty-two".