16161485 has 4 divisors (see below), whose sum is σ = 19393788. Its totient is φ = 12929184.

The previous prime is 16161463. The next prime is 16161493. The reversal of 16161485 is 58416161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58416161 = 67 ⋅871883.

It can be written as a sum of positive squares in 2 ways, for example, as 5317636 + 10843849 = 2306^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 16161485 - 2¹⁰ = 16160461 is a prime.

It is a super-2 number, since 2×16161485² = 522387194810450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616144 + ... + 1616153.

It is an arithmetic number, because the mean of its divisors is an integer number (4848447).

Almost surely, 2^16161485 is an apocalyptic number.

It is an amenable number.

16161485 is a deficient number, since it is larger than the sum of its proper divisors (3232303).

16161485 is an equidigital number, since it uses as much as digits as its factorization.

16161485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232302.

The product of its digits is 5760, while the sum is 32.

The square root of 16161485 is about 4020.1349479837. The cubic root of 16161485 is about 252.8291169545.

The spelling of 16161485 in words is "sixteen million, one hundred sixty-one thousand, four hundred eighty-five".