1254736213 has 2 divisors, whose sum is σ = 1254736214. Its totient is φ = 1254736212.

The previous prime is 1254736207. The next prime is 1254736313. The reversal of 1254736213 is 3126374521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877522129 + 377214084 = 29623^2 + 19422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254736213 - 2⁹ = 1254735701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254736013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627368106 + 627368107.

It is an arithmetic number, because the mean of its divisors is an integer number (627368107).

Almost surely, 2^1254736213 is an apocalyptic number.

It is an amenable number.

1254736213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254736213 is an equidigital number, since it uses as much as digits as its factorization.

1254736213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 1254736213 is about 35422.2558993636. The cubic root of 1254736213 is about 1078.5761451852.

The spelling of 1254736213 in words is "one billion, two hundred fifty-four million, seven hundred thirty-six thousand, two hundred thirteen".