992811811 has 2 divisors, whose sum is σ = 992811812. Its totient is φ = 992811810.

The previous prime is 992811793. The next prime is 992811823. The reversal of 992811811 is 118118299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992811811 - 2⁵ = 992811779 is a prime.

It is a super-2 number, since 2×992811811² = 1971350584122199442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (992811871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496405905 + 496405906.

It is an arithmetic number, because the mean of its divisors is an integer number (496405906).

Almost surely, 2^992811811 is an apocalyptic number.

992811811 is a deficient number, since it is larger than the sum of its proper divisors (1).

992811811 is an equidigital number, since it uses as much as digits as its factorization.

992811811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 40.

The square root of 992811811 is about 31508.9163729888. The cubic root of 992811811 is about 997.5981728448.

The spelling of 992811811 in words is "nine hundred ninety-two million, eight hundred eleven thousand, eight hundred eleven".