16980161 has 8 divisors (see below), whose sum is σ = 19613664. Its totient is φ = 14528320.

The previous prime is 16980097. The next prime is 16980169. The reversal of 16980161 is 16108961.

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 16980161 - 2⁶ = 16980097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16980169) 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, 45215 + ... + 45588.

It is an arithmetic number, because the mean of its divisors is an integer number (2451708).

Almost surely, 2^16980161 is an apocalyptic number.

16980161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16980161 is a deficient number, since it is larger than the sum of its proper divisors (2633503).

16980161 is a wasteful number, since it uses less digits than its factorization.

16980161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90831.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 16980161 is about 4120.6990911737. The cubic root of 16980161 is about 257.0280972778.

The spelling of 16980161 in words is "sixteen million, nine hundred eighty thousand, one hundred sixty-one".