1609508045 has 8 divisors (see below), whose sum is σ = 1933127160. Its totient is φ = 1286461440.

The previous prime is 1609508039. The next prime is 1609508059. The reversal of 1609508045 is 5408059061.

It can be written as a sum of positive squares in 4 ways, for example, as 70593604 + 1538914441 = 8402^2 + 39229^2 .

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

It is not a de Polignac number, because 1609508045 - 2⁶ = 1609507981 is a prime.

It is a super-2 number, since 2×1609508045² = 5181032293839444050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136916 + ... + 148205.

It is an arithmetic number, because the mean of its divisors is an integer number (241640895).

Almost surely, 2^1609508045 is an apocalyptic number.

It is an amenable number.

1609508045 is a deficient number, since it is larger than the sum of its proper divisors (323619115).

1609508045 is a wasteful number, since it uses less digits than its factorization.

1609508045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286255.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1609508045 is about 40118.6745169877. The cubic root of 1609508045 is about 1171.9193288310.

The spelling of 1609508045 in words is "one billion, six hundred nine million, five hundred eight thousand, forty-five".