1214165977 has 2 divisors, whose sum is σ = 1214165978. Its totient is φ = 1214165976.

The previous prime is 1214165971. The next prime is 1214165999. The reversal of 1214165977 is 7795614121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179166921 + 34999056 = 34339^2 + 5916^2 .

It is an emirp because it is prime and its reverse (7795614121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214165977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214165971) 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, 607082988 + 607082989.

It is an arithmetic number, because the mean of its divisors is an integer number (607082989).

Almost surely, 2^1214165977 is an apocalyptic number.

It is an amenable number.

1214165977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214165977 is an equidigital number, since it uses as much as digits as its factorization.

1214165977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 43.

The square root of 1214165977 is about 34844.8845169560. The cubic root of 1214165977 is about 1066.8237765434.

The spelling of 1214165977 in words is "one billion, two hundred fourteen million, one hundred sixty-five thousand, nine hundred seventy-seven".