1129349478 has 16 divisors (see below), whose sum is σ = 2281063536. Its totient is φ = 372722400.

The previous prime is 1129349471. The next prime is 1129349509. The reversal of 1129349478 is 8749439211.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129349471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931201 + ... + 932412.

It is an arithmetic number, because the mean of its divisors is an integer number (142566471).

Almost surely, 2^1129349478 is an apocalyptic number.

1129349478 is an abundant number, since it is smaller than the sum of its proper divisors (1151714058).

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

1129349478 is a wasteful number, since it uses less digits than its factorization.

1129349478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863719.

The product of its digits is 435456, while the sum is 48.

The square root of 1129349478 is about 33605.7953037865. The cubic root of 1129349478 is about 1041.3805254915.

The spelling of 1129349478 in words is "one billion, one hundred twenty-nine million, three hundred forty-nine thousand, four hundred seventy-eight".