1129864920 has 32 divisors (see below), whose sum is σ = 3389595120. Its totient is φ = 301297280.

The previous prime is 1129864891. The next prime is 1129864943. The reversal of 1129864920 is 294689211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4707651 + ... + 4707890.

Almost surely, 2^1129864920 is an apocalyptic number.

1129864920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129864920 is an abundant number, since it is smaller than the sum of its proper divisors (2259730200).

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

1129864920 is a wasteful number, since it uses less digits than its factorization.

1129864920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415555 (or 9415551 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1129864920 is about 33613.4633740708. The cubic root of 1129864920 is about 1041.5389322056.

The spelling of 1129864920 in words is "one billion, one hundred twenty-nine million, eight hundred sixty-four thousand, nine hundred twenty".