1081129600 has 48 divisors (see below), whose sum is σ = 2670735870. Its totient is φ = 432450560.

The previous prime is 1081129597. The next prime is 1081129627. The reversal of 1081129600 is 69211801.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 663989824 + 417139776 = 25768^2 + 20424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165727 + ... + 172126.

Almost surely, 2^1081129600 is an apocalyptic number.

1081129600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081129600 is an abundant number, since it is smaller than the sum of its proper divisors (1589606270).

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

1081129600 is an equidigital number, since it uses as much as digits as its factorization.

1081129600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337877 (or 337860 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1081129600 is about 32880.5352754483. The cubic root of 1081129600 is about 1026.3431450037.

The spelling of 1081129600 in words is "one billion, eighty-one million, one hundred twenty-nine thousand, six hundred".