16498945 has 4 divisors (see below), whose sum is σ = 19798740. Its totient is φ = 13199152.

The previous prime is 16498939. The next prime is 16498969. The reversal of 16498945 is 54989461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54989461 = 53 ⋅1037537.

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 7683984 = 2969^2 + 2772^2 .

It is a cyclic number.

It is not a de Polignac number, because 16498945 - 2¹³ = 16490753 is a prime.

It is a super-2 number, since 2×16498945² = 544430372226050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16498895 and 16498904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1649890 + ... + 1649899.

It is an arithmetic number, because the mean of its divisors is an integer number (4949685).

Almost surely, 2^16498945 is an apocalyptic number.

It is an amenable number.

16498945 is a deficient number, since it is larger than the sum of its proper divisors (3299795).

16498945 is an equidigital number, since it uses as much as digits as its factorization.

16498945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299794.

The product of its digits is 311040, while the sum is 46.

The square root of 16498945 is about 4061.8893387191. The cubic root of 16498945 is about 254.5767424241.

It can be divided in two parts, 1 and 6498945, that added together give a palindrome (6498946).

The spelling of 16498945 in words is "sixteen million, four hundred ninety-eight thousand, nine hundred forty-five".