1609688274 has 8 divisors (see below), whose sum is σ = 3219376560. Its totient is φ = 536562756.

The previous prime is 1609688263. The next prime is 1609688287. The reversal of 1609688274 is 4728869061.

It is a sphenic number, since it is the product of 3 distinct primes.

1609688274 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134140684 + ... + 134140695.

It is an arithmetic number, because the mean of its divisors is an integer number (402422070).

Almost surely, 2^1609688274 is an apocalyptic number.

1609688274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1609688274 is a wasteful number, since it uses less digits than its factorization.

1609688274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268281384.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1609688274 is about 40120.9206524476. The cubic root of 1609688274 is about 1171.9630701398.

The spelling of 1609688274 in words is "one billion, six hundred nine million, six hundred eighty-eight thousand, two hundred seventy-four".