1129775450 has 12 divisors (see below), whose sum is σ = 2101382430. Its totient is φ = 451910160.

The previous prime is 1129775447. The next prime is 1129775453. The reversal of 1129775450 is 545779211.

It is an interprime number because it is at equal distance from previous prime (1129775447) and next prime (1129775453).

It can be written as a sum of positive squares in 3 ways, for example, as 527023849 + 602751601 = 22957^2 + 24551^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1129775398 and 1129775407.

It is not an unprimeable number, because it can be changed into a prime (1129775453) 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 in 5 ways as a sum of consecutive naturals, for example, 11297705 + ... + 11297804.

Almost surely, 2^1129775450 is an apocalyptic number.

1129775450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129775450 is a deficient number, since it is larger than the sum of its proper divisors (971606980).

1129775450 is a wasteful number, since it uses less digits than its factorization.

1129775450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595521 (or 22595516 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 1129775450 is about 33612.1324821857. The cubic root of 1129775450 is about 1041.5114395540.

The spelling of 1129775450 in words is "one billion, one hundred twenty-nine million, seven hundred seventy-five thousand, four hundred fifty".