2016891604 has 48 divisors (see below), whose sum is σ = 4405314816. Its totient is φ = 786643200.

The previous prime is 2016891599. The next prime is 2016891607. The reversal of 2016891604 is 4061986102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016891607) 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, 13177 + ... + 64864.

It is an arithmetic number, because the mean of its divisors is an integer number (91777392).

Almost surely, 2^2016891604 is an apocalyptic number.

It is an amenable number.

2016891604 is an abundant number, since it is smaller than the sum of its proper divisors (2388423212).

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

2016891604 is a wasteful number, since it uses less digits than its factorization.

2016891604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78136 (or 78134 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2016891604 is about 44909.8163434232. The cubic root of 2016891604 is about 1263.4581252672.

The spelling of 2016891604 in words is "two billion, sixteen million, eight hundred ninety-one thousand, six hundred four".