16489773 has 6 divisors (see below), whose sum is σ = 23818574. Its totient is φ = 10993176.

The previous prime is 16489771. The next prime is 16489783. The reversal of 16489773 is 37798461.

It can be written as a sum of positive squares in only one way, i.e., 14424804 + 2064969 = 3798^2 + 1437^2 .

It is not a de Polignac number, because 16489773 - 2¹ = 16489771 is a prime.

It is a super-2 number, since 2×16489773² = 543825227183058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16489771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 916090 + ... + 916107.

Almost surely, 2^16489773 is an apocalyptic number.

It is an amenable number.

16489773 is a deficient number, since it is larger than the sum of its proper divisors (7328801).

16489773 is a wasteful number, since it uses less digits than its factorization.

16489773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832203 (or 1832200 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 16489773 is about 4060.7601505137. The cubic root of 16489773 is about 254.5295593932.

The spelling of 16489773 in words is "sixteen million, four hundred eighty-nine thousand, seven hundred seventy-three".