161024365 has 8 divisors (see below), whose sum is σ = 195221880. Its totient is φ = 127491072.

The previous prime is 161024363. The next prime is 161024371. The reversal of 161024365 is 563420161.

It can be written as a sum of positive squares in 4 ways, for example, as 292681 + 160731684 = 541^2 + 12678^2 .

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 161024365 - 2¹ = 161024363 is a prime.

It is a super-2 number, since 2×161024365² = 51857692247306450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161024363) 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 7 ways as a sum of consecutive naturals, for example, 165520 + ... + 166489.

It is an arithmetic number, because the mean of its divisors is an integer number (24402735).

Almost surely, 2^161024365 is an apocalyptic number.

It is an amenable number.

161024365 is a deficient number, since it is larger than the sum of its proper divisors (34197515).

161024365 is an equidigital number, since it uses as much as digits as its factorization.

161024365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332111.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 161024365 is about 12689.5376196298. The cubic root of 161024365 is about 544.0396239250.

The spelling of 161024365 in words is "one hundred sixty-one million, twenty-four thousand, three hundred sixty-five".