1214503861 has 2 divisors, whose sum is σ = 1214503862. Its totient is φ = 1214503860.

The previous prime is 1214503859. The next prime is 1214503889. The reversal of 1214503861 is 1683054121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880308900 + 334194961 = 29670^2 + 18281^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214503861 - 2¹ = 1214503859 is a prime.

Together with 1214503859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214503811) 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, 607251930 + 607251931.

It is an arithmetic number, because the mean of its divisors is an integer number (607251931).

Almost surely, 2^1214503861 is an apocalyptic number.

It is an amenable number.

1214503861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214503861 is an equidigital number, since it uses as much as digits as its factorization.

1214503861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1214503861 is about 34849.7325814704. The cubic root of 1214503861 is about 1066.9227276643.

Adding to 1214503861 its reverse (1683054121), we get a palindrome (2897557982).

The spelling of 1214503861 in words is "one billion, two hundred fourteen million, five hundred three thousand, eight hundred sixty-one".