1610547561 has 24 divisors (see below), whose sum is σ = 2774279040. Its totient is φ = 880298496.

The previous prime is 1610547511. The next prime is 1610547563. The reversal of 1610547561 is 1657450161.

It is a happy number.

1610547561 is a `hidden beast` number, since 1 + 61 + 0 + 547 + 56 + 1 = 666.

It is not a de Polignac number, because 1610547561 - 2¹⁰ = 1610546537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1610547563) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 554296 + ... + 557193.

It is an arithmetic number, because the mean of its divisors is an integer number (115594960).

Almost surely, 2^1610547561 is an apocalyptic number.

It is an amenable number.

1610547561 is a deficient number, since it is larger than the sum of its proper divisors (1163731479).

1610547561 is a wasteful number, since it uses less digits than its factorization.

1610547561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111525 (or 1111522 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1610547561 is about 40131.6279385723. The cubic root of 1610547561 is about 1172.1715729298.

The spelling of 1610547561 in words is "one billion, six hundred ten million, five hundred forty-seven thousand, five hundred sixty-one".