1145005747 has 2 divisors, whose sum is σ = 1145005748. Its totient is φ = 1145005746.

The previous prime is 1145005727. The next prime is 1145005787. The reversal of 1145005747 is 7475005411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145005747 is a prime.

It is a super-2 number, since 2×1145005747² = 2622076321326056018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145005727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572502873 + 572502874.

It is an arithmetic number, because the mean of its divisors is an integer number (572502874).

Almost surely, 2^1145005747 is an apocalyptic number.

1145005747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145005747 is an equidigital number, since it uses as much as digits as its factorization.

1145005747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1145005747 is about 33837.9335509721. The cubic root of 1145005747 is about 1046.1707069302.

The spelling of 1145005747 in words is "one billion, one hundred forty-five million, five thousand, seven hundred forty-seven".