16981075 has 12 divisors (see below), whose sum is σ = 21246408. Its totient is φ = 13462400.

The previous prime is 16981073. The next prime is 16981103. The reversal of 16981075 is 57018961.

It is not a de Polignac number, because 16981075 - 2¹ = 16981073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16981073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181 + ... + 5830.

It is an arithmetic number, because the mean of its divisors is an integer number (1770534).

Almost surely, 2^16981075 is an apocalyptic number.

16981075 is a deficient number, since it is larger than the sum of its proper divisors (4265333).

16981075 is a wasteful number, since it uses less digits than its factorization.

16981075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134 (or 6129 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 16981075 is about 4120.8099931931. The cubic root of 16981075 is about 257.0327089236.

The spelling of 16981075 in words is "sixteen million, nine hundred eighty-one thousand, seventy-five".