1999826827 has 8 divisors (see below), whose sum is σ = 2016115920. Its totient is φ = 1983595680.

The previous prime is 1999826813. The next prime is 1999826849. The reversal of 1999826827 is 7286289991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1999826827 - 2²³ = 1991438219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999806827) 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, 56208 + ... + 84610.

It is an arithmetic number, because the mean of its divisors is an integer number (252014490).

Almost surely, 2^1999826827 is an apocalyptic number.

1999826827 is a deficient number, since it is larger than the sum of its proper divisors (16289093).

1999826827 is a wasteful number, since it uses less digits than its factorization.

1999826827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28973.

The product of its digits is 7838208, while the sum is 61.

The square root of 1999826827 is about 44719.4233750839. The cubic root of 1999826827 is about 1259.8846847939.

The spelling of 1999826827 in words is "one billion, nine hundred ninety-nine million, eight hundred twenty-six thousand, eight hundred twenty-seven".