1409461561 has 4 divisors (see below), whose sum is σ = 1433350800. Its totient is φ = 1385572324.

The previous prime is 1409461481. The next prime is 1409461601. The reversal of 1409461561 is 1651649041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1409461561 - 2¹³ = 1409453369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1409461561.

It is not an unprimeable number, because it can be changed into a prime (1409461061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11944531 + ... + 11944648.

It is an arithmetic number, because the mean of its divisors is an integer number (358337700).

Almost surely, 2^1409461561 is an apocalyptic number.

It is an amenable number.

1409461561 is a deficient number, since it is larger than the sum of its proper divisors (23889239).

1409461561 is an equidigital number, since it uses as much as digits as its factorization.

1409461561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23889238.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1409461561 is about 37542.7963929167. The cubic root of 1409461561 is about 1121.2034155175.

The spelling of 1409461561 in words is "one billion, four hundred nine million, four hundred sixty-one thousand, five hundred sixty-one".