2016491823 has 36 divisors (see below), whose sum is σ = 3043768728. Its totient is φ = 1286072640.

The previous prime is 2016491819. The next prime is 2016491843. The reversal of 2016491823 is 3281946102.

2016491823 is a `hidden beast` number, since 2 + 0 + 1 + 649 + 1 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 2016491823 - 2² = 2016491819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016491843) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 750240 + ... + 752922.

Almost surely, 2^2016491823 is an apocalyptic number.

2016491823 is a deficient number, since it is larger than the sum of its proper divisors (1027276905).

2016491823 is a wasteful number, since it uses less digits than its factorization.

2016491823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2784 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2016491823 is about 44905.3651917006. The cubic root of 2016491823 is about 1263.3746403758.

The spelling of 2016491823 in words is "two billion, sixteen million, four hundred ninety-one thousand, eight hundred twenty-three".