1149578149 has 2 divisors, whose sum is σ = 1149578150. Its totient is φ = 1149578148.

The previous prime is 1149578117. The next prime is 1149578173. The reversal of 1149578149 is 9418759411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1111755649 + 37822500 = 33343^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149578149 - 2⁵ = 1149578117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149578179) 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, 574789074 + 574789075.

It is an arithmetic number, because the mean of its divisors is an integer number (574789075).

Almost surely, 2^1149578149 is an apocalyptic number.

It is an amenable number.

1149578149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149578149 is an equidigital number, since it uses as much as digits as its factorization.

1149578149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 1149578149 is about 33905.4294914546. The cubic root of 1149578149 is about 1047.5614305807.

The spelling of 1149578149 in words is "one billion, one hundred forty-nine million, five hundred seventy-eight thousand, one hundred forty-nine".