161468785 has 8 divisors (see below), whose sum is σ = 195540840. Its totient is φ = 127989504.

The previous prime is 161468761. The next prime is 161468789. The reversal of 161468785 is 587864161.

It can be written as a sum of positive squares in 4 ways, for example, as 27279729 + 134189056 = 5223^2 + 11584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161468785 - 2⁹ = 161468273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161468789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147592 + ... + 148681.

It is an arithmetic number, because the mean of its divisors is an integer number (24442605).

Almost surely, 2^161468785 is an apocalyptic number.

It is an amenable number.

161468785 is a deficient number, since it is larger than the sum of its proper divisors (34072055).

161468785 is a wasteful number, since it uses less digits than its factorization.

161468785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296387.

The product of its digits is 322560, while the sum is 46.

The square root of 161468785 is about 12707.0368300403. The cubic root of 161468785 is about 544.5396724616.

The spelling of 161468785 in words is "one hundred sixty-one million, four hundred sixty-eight thousand, seven hundred eighty-five".