1124512861 has 2 divisors, whose sum is σ = 1124512862. Its totient is φ = 1124512860.

The previous prime is 1124512813. The next prime is 1124512871. The reversal of 1124512861 is 1682154211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1124327961 + 184900 = 33531^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124512861 - 2²³ = 1116124253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1124512811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562256430 + 562256431.

It is an arithmetic number, because the mean of its divisors is an integer number (562256431).

Almost surely, 2^1124512861 is an apocalyptic number.

It is an amenable number.

1124512861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124512861 is an equidigital number, since it uses as much as digits as its factorization.

1124512861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 1124512861 is about 33533.7570367533. The cubic root of 1124512861 is about 1039.8917728231.

The spelling of 1124512861 in words is "one billion, one hundred twenty-four million, five hundred twelve thousand, eight hundred sixty-one".