1564111641 has 8 divisors (see below), whose sum is σ = 2096069184. Its totient is φ = 1037447600.

The previous prime is 1564111621. The next prime is 1564111649. The reversal of 1564111641 is 1461114651.

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 1564111641 - 2⁷ = 1564111513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1564111599 and 1564111608.

It is not an unprimeable number, because it can be changed into a prime (1564111649) 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, 1322685 + ... + 1323866.

It is an arithmetic number, because the mean of its divisors is an integer number (262008648).

Almost surely, 2^1564111641 is an apocalyptic number.

It is an amenable number.

1564111641 is a deficient number, since it is larger than the sum of its proper divisors (531957543).

1564111641 is a wasteful number, since it uses less digits than its factorization.

1564111641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646751.

The product of its digits is 2880, while the sum is 30.

The square root of 1564111641 is about 39548.8513233950. The cubic root of 1564111641 is about 1160.7960353043.

The spelling of 1564111641 in words is "one billion, five hundred sixty-four million, one hundred eleven thousand, six hundred forty-one".