1420770811 has 2 divisors, whose sum is σ = 1420770812. Its totient is φ = 1420770810.

The previous prime is 1420770803. The next prime is 1420770833. The reversal of 1420770811 is 1180770241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420770811 - 2³ = 1420770803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420870811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710385405 + 710385406.

It is an arithmetic number, because the mean of its divisors is an integer number (710385406).

Almost surely, 2^1420770811 is an apocalyptic number.

1420770811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420770811 is an equidigital number, since it uses as much as digits as its factorization.

1420770811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 1420770811 is about 37693.1135752938. The cubic root of 1420770811 is about 1124.1942044745.

The spelling of 1420770811 in words is "one billion, four hundred twenty million, seven hundred seventy thousand, eight hundred eleven".