1214378513 has 2 divisors, whose sum is σ = 1214378514. Its totient is φ = 1214378512.

The previous prime is 1214378471. The next prime is 1214378537. The reversal of 1214378513 is 3158734121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212223489 + 2155024 = 34817^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214378513 - 2⁸ = 1214378257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1214378563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607189256 + 607189257.

It is an arithmetic number, because the mean of its divisors is an integer number (607189257).

Almost surely, 2^1214378513 is an apocalyptic number.

It is an amenable number.

1214378513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214378513 is an equidigital number, since it uses as much as digits as its factorization.

1214378513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 1214378513 is about 34847.9341281517. The cubic root of 1214378513 is about 1066.8860209794.

It can be divided in two parts, 12143 and 78513, that multiplied together give a palindrome (953383359).

The spelling of 1214378513 in words is "one billion, two hundred fourteen million, three hundred seventy-eight thousand, five hundred thirteen".