1458228649 has 2 divisors, whose sum is σ = 1458228650. Its totient is φ = 1458228648.

The previous prime is 1458228647. The next prime is 1458228661. The reversal of 1458228649 is 9468228541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1194393600 + 263835049 = 34560^2 + 16243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1458228649 - 2¹ = 1458228647 is a prime.

Together with 1458228647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1458228641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 729114324 + 729114325.

It is an arithmetic number, because the mean of its divisors is an integer number (729114325).

Almost surely, 2^1458228649 is an apocalyptic number.

It is an amenable number.

1458228649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1458228649 is an equidigital number, since it uses as much as digits as its factorization.

1458228649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 49.

The square root of 1458228649 is about 38186.7601270388. The cubic root of 1458228649 is about 1133.9882174630.

The spelling of 1458228649 in words is "one billion, four hundred fifty-eight million, two hundred twenty-eight thousand, six hundred forty-nine".