16994001897 has 12 divisors (see below), whose sum is σ = 24642408180. Its totient is φ = 11285250048.

The previous prime is 16994001889. The next prime is 16994001901. The reversal of 16994001897 is 79810049961.

It can be written as a sum of positive squares in 2 ways, for example, as 12235899456 + 4758102441 = 110616^2 + 68979^2 .

It is not a de Polignac number, because 16994001897 - 2³ = 16994001889 is a prime.

It is a super-2 number, since 2×16994001897² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16994001097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3671272 + ... + 3675897.

It is an arithmetic number, because the mean of its divisors is an integer number (2053534015).

Almost surely, 2^16994001897 is an apocalyptic number.

It is an amenable number.

16994001897 is a deficient number, since it is larger than the sum of its proper divisors (7648406283).

16994001897 is a wasteful number, since it uses less digits than its factorization.

16994001897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347432 (or 7347429 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 16994001897 in words is "sixteen billion, nine hundred ninety-four million, one thousand, eight hundred ninety-seven".