1450781489 has 2 divisors, whose sum is σ = 1450781490. Its totient is φ = 1450781488.

The previous prime is 1450781467. The next prime is 1450781531. The reversal of 1450781489 is 9841870541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395769600 + 55011889 = 37360^2 + 7417^2 .

It is a cyclic number.

It is not a de Polignac number, because 1450781489 - 2²⁰ = 1449732913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1450786489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725390744 + 725390745.

It is an arithmetic number, because the mean of its divisors is an integer number (725390745).

Almost surely, 2^1450781489 is an apocalyptic number.

It is an amenable number.

1450781489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1450781489 is an equidigital number, since it uses as much as digits as its factorization.

1450781489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 1450781489 is about 38089.1256003600. The cubic root of 1450781489 is about 1132.0544995029.

The spelling of 1450781489 in words is "one billion, four hundred fifty million, seven hundred eighty-one thousand, four hundred eighty-nine".