16945123 has 6 divisors (see below), whose sum is σ = 18349044. Its totient is φ = 15641496.

The previous prime is 16945121. The next prime is 16945133. The reversal of 16945123 is 32154961.

It is not a de Polignac number, because 16945123 - 2¹ = 16945121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16945121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49965 + ... + 50302.

It is an arithmetic number, because the mean of its divisors is an integer number (3058174).

Almost surely, 2^16945123 is an apocalyptic number.

16945123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16945123 is a deficient number, since it is larger than the sum of its proper divisors (1403921).

16945123 is a wasteful number, since it uses less digits than its factorization.

16945123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100293 (or 100280 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 16945123 is about 4116.4454326518. The cubic root of 16945123 is about 256.8511858822.

The spelling of 16945123 in words is "sixteen million, nine hundred forty-five thousand, one hundred twenty-three".