1427799811 has 2 divisors, whose sum is σ = 1427799812. Its totient is φ = 1427799810.

The previous prime is 1427799803. The next prime is 1427799817. The reversal of 1427799811 is 1189977241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1427799811 - 2³ = 1427799803 is a prime.

It is a super-2 number, since 2×1427799811² = 4077224600583271442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1427799817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713899905 + 713899906.

It is an arithmetic number, because the mean of its divisors is an integer number (713899906).

Almost surely, 2^1427799811 is an apocalyptic number.

1427799811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427799811 is an equidigital number, since it uses as much as digits as its factorization.

1427799811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 49.

The square root of 1427799811 is about 37786.2383811885. The cubic root of 1427799811 is about 1126.0450696383.

The spelling of 1427799811 in words is "one billion, four hundred twenty-seven million, seven hundred ninety-nine thousand, eight hundred eleven".