1187804666227 has 2 divisors, whose sum is σ = 1187804666228. Its totient is φ = 1187804666226.

The previous prime is 1187804666221. The next prime is 1187804666249. The reversal of 1187804666227 is 7226664087811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1187804666227 is a prime.

It is a super-2 number, since 2×1187804666227² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1187804666221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593902333113 + 593902333114.

It is an arithmetic number, because the mean of its divisors is an integer number (593902333114).

Almost surely, 2^{1187804666227} is an apocalyptic number.

1187804666227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187804666227 is an equidigital number, since it uses as much as digits as its factorization.

1187804666227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 1187804666227 in words is "one trillion, one hundred eighty-seven billion, eight hundred four million, six hundred sixty-six thousand, two hundred twenty-seven".