361649885 has 8 divisors (see below), whose sum is σ = 434344920. Its totient is φ = 289076544.

The previous prime is 361649867. The next prime is 361649887. The reversal of 361649885 is 588946163.

It can be written as a sum of positive squares in 4 ways, for example, as 763876 + 360886009 = 874^2 + 18997^2 .

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 361649885 - 2¹⁴ = 361633501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361649887) 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 in 7 ways as a sum of consecutive naturals, for example, 23750 + ... + 35879.

It is an arithmetic number, because the mean of its divisors is an integer number (54293115).

Almost surely, 2^361649885 is an apocalyptic number.

It is an amenable number.

361649885 is a deficient number, since it is larger than the sum of its proper divisors (72695035).

361649885 is a wasteful number, since it uses less digits than its factorization.

361649885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60847.

The product of its digits is 1244160, while the sum is 50.

The square root of 361649885 is about 19017.0945467492. The cubic root of 361649885 is about 712.4637576723.

The spelling of 361649885 in words is "three hundred sixty-one million, six hundred forty-nine thousand, eight hundred eighty-five".