1663105011 has 16 divisors (see below), whose sum is σ = 2265973248. Its totient is φ = 1084514400.

The previous prime is 1663105001. The next prime is 1663105013. The reversal of 1663105011 is 1105013661.

It is not a de Polignac number, because 1663105011 - 2¹³ = 1663096819 is a prime.

It is a super-2 number, since 2×1663105011² = 5531836555226620242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663105013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467901 + ... + 471441.

It is an arithmetic number, because the mean of its divisors is an integer number (141623328).

Almost surely, 2^1663105011 is an apocalyptic number.

1663105011 is a deficient number, since it is larger than the sum of its proper divisors (602868237).

1663105011 is a wasteful number, since it uses less digits than its factorization.

1663105011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1663105011 is about 40781.1845217865. The cubic root of 1663105011 is about 1184.7859372274.

Adding to 1663105011 its reverse (1105013661), we get a palindrome (2768118672).

The spelling of 1663105011 in words is "one billion, six hundred sixty-three million, one hundred five thousand, eleven".