161300709 has 24 divisors (see below), whose sum is σ = 259683840. Its totient is φ = 95879808.

The previous prime is 161300651. The next prime is 161300717. The reversal of 161300709 is 907003161.

It is not a de Polignac number, because 161300709 - 2⁹ = 161300197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161300729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24837 + ... + 30650.

It is an arithmetic number, because the mean of its divisors is an integer number (10820160).

Almost surely, 2^161300709 is an apocalyptic number.

161300709 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

161300709 is a deficient number, since it is larger than the sum of its proper divisors (98383131).

161300709 is a wasteful number, since it uses less digits than its factorization.

161300709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55529 (or 55526 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 161300709 is about 12700.4216071751. The cubic root of 161300709 is about 544.3506662196.

The spelling of 161300709 in words is "one hundred sixty-one million, three hundred thousand, seven hundred nine".