161102709 has 16 divisors (see below), whose sum is σ = 239227200. Its totient is φ = 107151408.

The previous prime is 161102707. The next prime is 161102719. The reversal of 161102709 is 907201161.

It is not a de Polignac number, because 161102709 - 2¹ = 161102707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161102701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5227 + ... + 18695.

It is an arithmetic number, because the mean of its divisors is an integer number (14951700).

Almost surely, 2^161102709 is an apocalyptic number.

It is an amenable number.

161102709 is a deficient number, since it is larger than the sum of its proper divisors (78124491).

161102709 is a wasteful number, since it uses less digits than its factorization.

161102709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13921 (or 13915 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 161102709 is about 12692.6241967530. The cubic root of 161102709 is about 544.1278410710.

The spelling of 161102709 in words is "one hundred sixty-one million, one hundred two thousand, seven hundred nine".