1563941001 has 16 divisors (see below), whose sum is σ = 2418719744. Its totient is φ = 880341264.

The previous prime is 1563940967. The next prime is 1563941017. The reversal of 1563941001 is 1001493651.

It is not a de Polignac number, because 1563941001 - 2⁹ = 1563940489 is a prime.

It is a super-2 number, since 2×1563941001² = 4891822909217764002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1563941001.

It is not an unprimeable number, because it can be changed into a prime (1563941081) 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 15 ways as a sum of consecutive naturals, for example, 554365 + ... + 557178.

It is an arithmetic number, because the mean of its divisors is an integer number (151169984).

Almost surely, 2^1563941001 is an apocalyptic number.

It is an amenable number.

1563941001 is a deficient number, since it is larger than the sum of its proper divisors (854778743).

1563941001 is a wasteful number, since it uses less digits than its factorization.

1563941001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111620.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1563941001 is about 39546.6939326159. The cubic root of 1563941001 is about 1160.7538206196.

The spelling of 1563941001 in words is "one billion, five hundred sixty-three million, nine hundred forty-one thousand, one".