1154131361 has 2 divisors, whose sum is σ = 1154131362. Its totient is φ = 1154131360.

The previous prime is 1154131337. The next prime is 1154131367. The reversal of 1154131361 is 1631314511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659513761 + 494617600 = 25681^2 + 22240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154131361 - 2¹⁸ = 1153869217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1154131361.

It is not a weakly prime, because it can be changed into another prime (1154131367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577065680 + 577065681.

It is an arithmetic number, because the mean of its divisors is an integer number (577065681).

Almost surely, 2^1154131361 is an apocalyptic number.

It is an amenable number.

1154131361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154131361 is an equidigital number, since it uses as much as digits as its factorization.

1154131361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 1154131361 is about 33972.5089005802. The cubic root of 1154131361 is about 1048.9426577682.

Adding to 1154131361 its reverse (1631314511), we get a palindrome (2785445872).

The spelling of 1154131361 in words is "one billion, one hundred fifty-four million, one hundred thirty-one thousand, three hundred sixty-one".