1011995827 has 2 divisors, whose sum is σ = 1011995828. Its totient is φ = 1011995826.

The previous prime is 1011995813. The next prime is 1011995857. The reversal of 1011995827 is 7285991101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011995827 - 2²³ = 1003607219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011995857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505997913 + 505997914.

It is an arithmetic number, because the mean of its divisors is an integer number (505997914).

Almost surely, 2^1011995827 is an apocalyptic number.

1011995827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011995827 is an equidigital number, since it uses as much as digits as its factorization.

1011995827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 43.

The square root of 1011995827 is about 31811.8818525406. The cubic root of 1011995827 is about 1003.9827258368.

The spelling of 1011995827 in words is "one billion, eleven million, nine hundred ninety-five thousand, eight hundred twenty-seven".