2009154071 has 2 divisors, whose sum is σ = 2009154072. Its totient is φ = 2009154070.

The previous prime is 2009154053. The next prime is 2009154083. The reversal of 2009154071 is 1704519002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009154071 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009154041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004577035 + 1004577036.

It is an arithmetic number, because the mean of its divisors is an integer number (1004577036).

Almost surely, 2^2009154071 is an apocalyptic number.

2009154071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009154071 is an equidigital number, since it uses as much as digits as its factorization.

2009154071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2009154071 is about 44823.5883324840. The cubic root of 2009154071 is about 1261.8403590752.

The spelling of 2009154071 in words is "two billion, nine million, one hundred fifty-four thousand, seventy-one".