16481897 has 2 divisors, whose sum is σ = 16481898. Its totient is φ = 16481896.

The previous prime is 16481851. The next prime is 16481903. The reversal of 16481897 is 79818461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8886361 + 7595536 = 2981^2 + 2756^2 .

It is a cyclic number.

It is not a de Polignac number, because 16481897 - 2¹² = 16477801 is a prime.

It is not a weakly prime, because it can be changed into another prime (16481807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8240948 + 8240949.

It is an arithmetic number, because the mean of its divisors is an integer number (8240949).

Almost surely, 2^16481897 is an apocalyptic number.

It is an amenable number.

16481897 is a deficient number, since it is larger than the sum of its proper divisors (1).

16481897 is an equidigital number, since it uses as much as digits as its factorization.

16481897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 16481897 is about 4059.7902655187. The cubic root of 16481897 is about 254.4890293415.

The spelling of 16481897 in words is "sixteen million, four hundred eighty-one thousand, eight hundred ninety-seven".