1158288949 has 2 divisors, whose sum is σ = 1158288950. Its totient is φ = 1158288948.

The previous prime is 1158288707. The next prime is 1158288953. The reversal of 1158288949 is 9498828511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837234225 + 321054724 = 28935^2 + 17918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158288949 - 2²¹ = 1156191797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1158288949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158282949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579144474 + 579144475.

It is an arithmetic number, because the mean of its divisors is an integer number (579144475).

Almost surely, 2^1158288949 is an apocalyptic number.

It is an amenable number.

1158288949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158288949 is an equidigital number, since it uses as much as digits as its factorization.

1158288949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 55.

The square root of 1158288949 is about 34033.6443684775. The cubic root of 1158288949 is about 1050.2007020728.

The spelling of 1158288949 in words is "one billion, one hundred fifty-eight million, two hundred eighty-eight thousand, nine hundred forty-nine".