161250863 has 2 divisors, whose sum is σ = 161250864. Its totient is φ = 161250862.

The previous prime is 161250839. The next prime is 161250883. The reversal of 161250863 is 368052161.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (368052161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161250863 - 2⁶ = 161250799 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 (161250833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80625431 + 80625432.

It is an arithmetic number, because the mean of its divisors is an integer number (80625432).

Almost surely, 2^161250863 is an apocalyptic number.

161250863 is a deficient number, since it is larger than the sum of its proper divisors (1).

161250863 is an equidigital number, since it uses as much as digits as its factorization.

161250863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 161250863 is about 12698.4590797466. The cubic root of 161250863 is about 544.2945877333.

The spelling of 161250863 in words is "one hundred sixty-one million, two hundred fifty thousand, eight hundred sixty-three".