1129550450 has 90 divisors (see below), whose sum is σ = 2476506951. Its totient is φ = 383281920.

The previous prime is 1129550423. The next prime is 1129550491. The reversal of 1129550450 is 540559211.

It can be written as a sum of positive squares in 5 ways, for example, as 352200289 + 777350161 = 18767^2 + 27881^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23765.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 11644802 + ... + 11644898.

Almost surely, 2^1129550450 is an apocalyptic number.

1129550450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129550450 is an abundant number, since it is smaller than the sum of its proper divisors (1346956501).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129550450 is an frugal number, since it uses more digits than its factorization.

1129550450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1129550450 is about 33608.7853097966. The cubic root of 1129550450 is about 1041.4422943587.

Multiplying 1129550450 by its sum of digits (32), we get a square (36145614400 = 190120²).

The spelling of 1129550450 in words is "one billion, one hundred twenty-nine million, five hundred fifty thousand, four hundred fifty".