1154775481 has 2 divisors, whose sum is σ = 1154775482. Its totient is φ = 1154775480.

The previous prime is 1154775379. The next prime is 1154775509. The reversal of 1154775481 is 1845774511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599466256 + 555309225 = 24484^2 + 23565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154775481 - 2⁷ = 1154775353 is a prime.

It is a super-3 number, since 3×1154775481³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1154775581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577387740 + 577387741.

It is an arithmetic number, because the mean of its divisors is an integer number (577387741).

Almost surely, 2^1154775481 is an apocalyptic number.

It is an amenable number.

1154775481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154775481 is an equidigital number, since it uses as much as digits as its factorization.

1154775481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 43.

The square root of 1154775481 is about 33981.9875963723. The cubic root of 1154775481 is about 1049.1377595606.

The spelling of 1154775481 in words is "one billion, one hundred fifty-four million, seven hundred seventy-five thousand, four hundred eighty-one".