1564460461 has 4 divisors (see below), whose sum is σ = 1590976800. Its totient is φ = 1537944124.

The previous prime is 1564460449. The next prime is 1564460489. The reversal of 1564460461 is 1640644651.

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 1564460461 - 2⁷ = 1564460333 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 1564460461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564460431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13258081 + ... + 13258198.

It is an arithmetic number, because the mean of its divisors is an integer number (397744200).

Almost surely, 2^1564460461 is an apocalyptic number.

It is an amenable number.

1564460461 is a deficient number, since it is larger than the sum of its proper divisors (26516339).

1564460461 is an equidigital number, since it uses as much as digits as its factorization.

1564460461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26516338.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1564460461 is about 39553.2610665669. The cubic root of 1564460461 is about 1160.8823204444.

The spelling of 1564460461 in words is "one billion, five hundred sixty-four million, four hundred sixty thousand, four hundred sixty-one".