1144555747 has 2 divisors, whose sum is σ = 1144555748. Its totient is φ = 1144555746.

The previous prime is 1144555663. The next prime is 1144555771. The reversal of 1144555747 is 7475554411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1144555747 - 2¹¹ = 1144553699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1144555147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572277873 + 572277874.

It is an arithmetic number, because the mean of its divisors is an integer number (572277874).

Almost surely, 2^1144555747 is an apocalyptic number.

1144555747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144555747 is an equidigital number, since it uses as much as digits as its factorization.

1144555747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392000, while the sum is 43.

The square root of 1144555747 is about 33831.2835553131. The cubic root of 1144555747 is about 1046.0336367288.

The spelling of 1144555747 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, seven hundred forty-seven".