1828491811 has 2 divisors, whose sum is σ = 1828491812. Its totient is φ = 1828491810.

The previous prime is 1828491781. The next prime is 1828491839. The reversal of 1828491811 is 1181948281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1828491811 - 2⁷ = 1828491683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1828491611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914245905 + 914245906.

It is an arithmetic number, because the mean of its divisors is an integer number (914245906).

Almost surely, 2^1828491811 is an apocalyptic number.

1828491811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1828491811 is an equidigital number, since it uses as much as digits as its factorization.

1828491811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 43.

The square root of 1828491811 is about 42760.8677531221. The cubic root of 1828491811 is about 1222.8250867980.

The spelling of 1828491811 in words is "one billion, eight hundred twenty-eight million, four hundred ninety-one thousand, eight hundred eleven".