1129346649 has 12 divisors (see below), whose sum is σ = 1636123476. Its totient is φ = 750661632.

The previous prime is 1129346629. The next prime is 1129346663. The reversal of 1129346649 is 9466439211.

It can be written as a sum of positive squares in 2 ways, for example, as 451265049 + 678081600 = 21243^2 + 26040^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1129346649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129346629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183144 + ... + 189209.

It is an arithmetic number, because the mean of its divisors is an integer number (136343623).

Almost surely, 2^1129346649 is an apocalyptic number.

It is an amenable number.

1129346649 is a deficient number, since it is larger than the sum of its proper divisors (506776827).

1129346649 is a wasteful number, since it uses less digits than its factorization.

1129346649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372696 (or 372693 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1129346649 is about 33605.7532128057. The cubic root of 1129346649 is about 1041.3796559444.

The spelling of 1129346649 in words is "one billion, one hundred twenty-nine million, three hundred forty-six thousand, six hundred forty-nine".