16474492609 has 9 divisors (see below), whose sum is σ = 16936665417. Its totient is φ = 16024615344.

The previous prime is 16474492607. The next prime is 16474492667. The reversal of 16474492609 is 90629447461.

The square root of 16474492609 is 128353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 428697025 + 16045795584 = 20705^2 + 126672^2 .

It is not a de Polignac number, because 16474492609 - 2¹ = 16474492607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16474492607) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4747327 + ... + 4750795.

It is an arithmetic number, because the mean of its divisors is an integer number (1881851713).

Almost surely, 2^16474492609 is an apocalyptic number.

16474492609 is the 128353-rd square number.

16474492609 is the 64177-th centered octagonal number.

It is an amenable number.

16474492609 is a deficient number, since it is larger than the sum of its proper divisors (462172808).

16474492609 is an frugal number, since it uses more digits than its factorization.

16474492609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 16474492609 in words is "sixteen billion, four hundred seventy-four million, four hundred ninety-two thousand, six hundred nine".