1469609561 has 8 divisors (see below), whose sum is σ = 1686889920. Its totient is φ = 1254163248.

The previous prime is 1469609551. The next prime is 1469609579. The reversal of 1469609561 is 1659069641.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1469609561 - 2⁶ = 1469609497 is a prime.

It is a super-2 number, since 2×1469609561² = 4319504523565225442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1469609551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456791 + ... + 459996.

It is an arithmetic number, because the mean of its divisors is an integer number (210861240).

Almost surely, 2^1469609561 is an apocalyptic number.

It is an amenable number.

1469609561 is a deficient number, since it is larger than the sum of its proper divisors (217280359).

1469609561 is an equidigital number, since it uses as much as digits as its factorization.

1469609561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917023.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 1469609561 is about 38335.4869670388. The cubic root of 1469609561 is about 1136.9306892451.

The spelling of 1469609561 in words is "one billion, four hundred sixty-nine million, six hundred nine thousand, five hundred sixty-one".