1145356777 has 2 divisors, whose sum is σ = 1145356778. Its totient is φ = 1145356776.

The previous prime is 1145356733. The next prime is 1145356781. The reversal of 1145356777 is 7776535411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762919641 + 382437136 = 27621^2 + 19556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145356777 - 2⁷ = 1145356649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145353777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572678388 + 572678389.

It is an arithmetic number, because the mean of its divisors is an integer number (572678389).

Almost surely, 2^1145356777 is an apocalyptic number.

It is an amenable number.

1145356777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145356777 is an equidigital number, since it uses as much as digits as its factorization.

1145356777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 46.

The square root of 1145356777 is about 33843.1200837039. The cubic root of 1145356777 is about 1046.2776058933.

The spelling of 1145356777 in words is "one billion, one hundred forty-five million, three hundred fifty-six thousand, seven hundred seventy-seven".