1129612920 has 64 divisors (see below), whose sum is σ = 3426948000. Its totient is φ = 297842688.

The previous prime is 1129612919. The next prime is 1129612921. The reversal of 1129612920 is 292169211.

It is an interprime number because it is at equal distance from previous prime (1129612919) and next prime (1129612921).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129612921) 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 15 ways as a sum of consecutive naturals, for example, 42205 + ... + 63564.

Almost surely, 2^1129612920 is an apocalyptic number.

1129612920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129612920 is an abundant number, since it is smaller than the sum of its proper divisors (2297335080).

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

1129612920 is a wasteful number, since it uses less digits than its factorization.

1129612920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105872 (or 105868 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1129612920 is about 33609.7146670423. The cubic root of 1129612920 is about 1041.4614930587.

The spelling of 1129612920 in words is "one billion, one hundred twenty-nine million, six hundred twelve thousand, nine hundred twenty".