1149436789 has 2 divisors, whose sum is σ = 1149436790. Its totient is φ = 1149436788.

The previous prime is 1149436777. The next prime is 1149436829. The reversal of 1149436789 is 9876349411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075184100 + 74252689 = 32790^2 + 8617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149436789 - 2²⁵ = 1115882357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149437789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574718394 + 574718395.

It is an arithmetic number, because the mean of its divisors is an integer number (574718395).

Almost surely, 2^1149436789 is an apocalyptic number.

It is an amenable number.

1149436789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149436789 is an equidigital number, since it uses as much as digits as its factorization.

1149436789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 1149436789 is about 33903.3448054908. The cubic root of 1149436789 is about 1047.5184903786.

The spelling of 1149436789 in words is "one billion, one hundred forty-nine million, four hundred thirty-six thousand, seven hundred eighty-nine".