2016989406 has 48 divisors (see below), whose sum is σ = 4401830160. Its totient is φ = 667474560.

The previous prime is 2016989389. The next prime is 2016989413. The reversal of 2016989406 is 6049896102.

It is a happy number.

2016989406 is a `hidden beast` number, since 2 + 0 + 169 + 89 + 406 = 666.

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2650066 + ... + 2650826.

It is an arithmetic number, because the mean of its divisors is an integer number (91704795).

Almost surely, 2^2016989406 is an apocalyptic number.

2016989406 is an abundant number, since it is smaller than the sum of its proper divisors (2384840754).

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

2016989406 is a wasteful number, since it uses less digits than its factorization.

2016989406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2016989406 is about 44910.9052012983. The cubic root of 2016989406 is about 1263.4785472430.

The spelling of 2016989406 in words is "two billion, sixteen million, nine hundred eighty-nine thousand, four hundred six".