16931093 has 8 divisors (see below), whose sum is σ = 17207640. Its totient is φ = 16656640.

The previous prime is 16931081. The next prime is 16931111. The reversal of 16931093 is 39013961.

It can be written as a sum of positive squares in 4 ways, for example, as 6543364 + 10387729 = 2558^2 + 3223^2 .

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 16931093 - 2⁴ = 16931077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16931023) 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, 24671 + ... + 25347.

It is an arithmetic number, because the mean of its divisors is an integer number (2150955).

Almost surely, 2^16931093 is an apocalyptic number.

It is an amenable number.

16931093 is a deficient number, since it is larger than the sum of its proper divisors (276547).

16931093 is an equidigital number, since it uses as much as digits as its factorization.

16931093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 16931093 is about 4114.7409395975. The cubic root of 16931093 is about 256.7802782204.

The spelling of 16931093 in words is "sixteen million, nine hundred thirty-one thousand, ninety-three".