4487906161 has 4 divisors (see below), whose sum is σ = 4488067300. Its totient is φ = 4487745024.

The previous prime is 4487906149. The next prime is 4487906179. The reversal of 4487906161 is 1616097844.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3160688400 + 1327217761 = 56220^2 + 36431^2 .

It is a cyclic number.

It is not a de Polignac number, because 4487906161 - 2²⁷ = 4353688433 is a prime.

It is a deceptive number, since it divides R_4487906160.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4487906561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26856 + ... + 98473.

It is an arithmetic number, because the mean of its divisors is an integer number (1122016825).

Almost surely, 2^4487906161 is an apocalyptic number.

4487906161 is the 35809-th nonagonal number.

It is an amenable number.

4487906161 is a deficient number, since it is larger than the sum of its proper divisors (161139).

4487906161 is a wasteful number, since it uses less digits than its factorization.

4487906161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161138.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 4487906161 is about 66991.8365250573. The cubic root of 4487906161 is about 1649.4832983880.

The spelling of 4487906161 in words is "four billion, four hundred eighty-seven million, nine hundred six thousand, one hundred sixty-one".