1455912538649 has 2 divisors, whose sum is σ = 1455912538650. Its totient is φ = 1455912538648.

The previous prime is 1455912538537. The next prime is 1455912538651. The reversal of 1455912538649 is 9468352195541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420701892624 + 35210646025 = 1191932^2 + 187645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1455912538649 is a prime.

Together with 1455912538651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1455912538591 and 1455912538600.

It is not a weakly prime, because it can be changed into another prime (1455912538049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727956269324 + 727956269325.

It is an arithmetic number, because the mean of its divisors is an integer number (727956269325).

Almost surely, 2^{1455912538649} is an apocalyptic number.

It is an amenable number.

1455912538649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455912538649 is an equidigital number, since it uses as much as digits as its factorization.

1455912538649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 62.

The spelling of 1455912538649 in words is "one trillion, four hundred fifty-five billion, nine hundred twelve million, five hundred thirty-eight thousand, six hundred forty-nine".