1660100111 has 2 divisors, whose sum is σ = 1660100112. Its totient is φ = 1660100110.

The previous prime is 1660100107. The next prime is 1660100137. The reversal of 1660100111 is 1110010661.

It is a weak prime.

It is an emirp because it is prime and its reverse (1110010661) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1110010991 and 1990100111.

It is a cyclic number.

It is not a de Polignac number, because 1660100111 - 2² = 1660100107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660100111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660103111) 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 as a sum of consecutive naturals, namely, 830050055 + 830050056.

It is an arithmetic number, because the mean of its divisors is an integer number (830050056).

Almost surely, 2^1660100111 is an apocalyptic number.

1660100111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660100111 is an equidigital number, since it uses as much as digits as its factorization.

1660100111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1660100111 is about 40744.3261203324. The cubic root of 1660100111 is about 1184.0719495231.

Adding to 1660100111 its reverse (1110010661), we get a palindrome (2770110772).

The spelling of 1660100111 in words is "one billion, six hundred sixty million, one hundred thousand, one hundred eleven".