16961813 has 8 divisors (see below), whose sum is σ = 19477920. Its totient is φ = 14608080.

The previous prime is 16961803. The next prime is 16961831. The reversal of 16961813 is 31816961.

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 16961813 - 2¹⁴ = 16945429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16961803) 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, 40370 + ... + 40787.

It is an arithmetic number, because the mean of its divisors is an integer number (2434740).

Almost surely, 2^16961813 is an apocalyptic number.

It is an amenable number.

16961813 is a deficient number, since it is larger than the sum of its proper divisors (2516107).

16961813 is a wasteful number, since it uses less digits than its factorization.

16961813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81187.

The product of its digits is 7776, while the sum is 35.

The square root of 16961813 is about 4118.4721681711. The cubic root of 16961813 is about 256.9354862367.

The spelling of 16961813 in words is "sixteen million, nine hundred sixty-one thousand, eight hundred thirteen".