1949220071 has 2 divisors, whose sum is σ = 1949220072. Its totient is φ = 1949220070.

The previous prime is 1949219981. The next prime is 1949220083. The reversal of 1949220071 is 1700229491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1949220071 - 2¹⁰ = 1949219047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1949220271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974610035 + 974610036.

It is an arithmetic number, because the mean of its divisors is an integer number (974610036).

Almost surely, 2^1949220071 is an apocalyptic number.

1949220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949220071 is an equidigital number, since it uses as much as digits as its factorization.

1949220071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1949220071 is about 44149.9724914977. The cubic root of 1949220071 is about 1249.1663926827.

The spelling of 1949220071 in words is "one billion, nine hundred forty-nine million, two hundred twenty thousand, seventy-one".