16378105 has 12 divisors (see below), whose sum is σ = 20013732. Its totient is φ = 12866720.

The previous prime is 16378099. The next prime is 16378111. The reversal of 16378105 is 50187361.

It is an interprime number because it is at equal distance from previous prime (16378099) and next prime (16378111).

It can be written as a sum of positive squares in 2 ways, for example, as 8020224 + 8357881 = 2832^2 + 2891^2 .

It is not a de Polignac number, because 16378105 - 2³ = 16378097 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 16935 + ... + 17875.

It is an arithmetic number, because the mean of its divisors is an integer number (1667811).

Almost surely, 2^16378105 is an apocalyptic number.

It is an amenable number.

16378105 is a deficient number, since it is larger than the sum of its proper divisors (3635627).

16378105 is an frugal number, since it uses more digits than its factorization.

16378105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 16378105 is about 4046.9871509556. The cubic root of 16378105 is about 253.9537033027.

The spelling of 16378105 in words is "sixteen million, three hundred seventy-eight thousand, one hundred five".