1149578329 has 2 divisors, whose sum is σ = 1149578330. Its totient is φ = 1149578328.

The previous prime is 1149578327. The next prime is 1149578389. The reversal of 1149578329 is 9238759411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653313600 + 496264729 = 25560^2 + 22277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149578329 - 2¹ = 1149578327 is a prime.

Together with 1149578327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1149578323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574789164 + 574789165.

It is an arithmetic number, because the mean of its divisors is an integer number (574789165).

Almost surely, 2^1149578329 is an apocalyptic number.

It is an amenable number.

1149578329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149578329 is an equidigital number, since it uses as much as digits as its factorization.

1149578329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 1149578329 is about 33905.4321458966. The cubic root of 1149578329 is about 1047.5614852561.

The spelling of 1149578329 in words is "one billion, one hundred forty-nine million, five hundred seventy-eight thousand, three hundred twenty-nine".