1115145461 has 2 divisors, whose sum is σ = 1115145462. Its totient is φ = 1115145460.

The previous prime is 1115145457. The next prime is 1115145463. The reversal of 1115145461 is 1645415111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007110225 + 108035236 = 31735^2 + 10394^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115145461 - 2² = 1115145457 is a prime.

Together with 1115145463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115145463) 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, 557572730 + 557572731.

It is an arithmetic number, because the mean of its divisors is an integer number (557572731).

Almost surely, 2^1115145461 is an apocalyptic number.

It is an amenable number.

1115145461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115145461 is an equidigital number, since it uses as much as digits as its factorization.

1115145461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 29.

The square root of 1115145461 is about 33393.7937497374. The cubic root of 1115145461 is about 1036.9962208183.

The spelling of 1115145461 in words is "one billion, one hundred fifteen million, one hundred forty-five thousand, four hundred sixty-one".