1128354660 has 36 divisors (see below), whose sum is σ = 3422676348. Its totient is φ = 300894528.

The previous prime is 1128354641. The next prime is 1128354679. The reversal of 1128354660 is 664538211.

It is a happy number.

1128354660 is a `hidden beast` number, since 112 + 83 + 5 + 466 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1128354641) and next prime (1128354679).

It can be written as a sum of positive squares in 2 ways, for example, as 645058404 + 483296256 = 25398^2 + 21984^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3134139 + ... + 3134498.

It is an arithmetic number, because the mean of its divisors is an integer number (95074343).

Almost surely, 2^1128354660 is an apocalyptic number.

1128354660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128354660 is an abundant number, since it is smaller than the sum of its proper divisors (2294321688).

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

1128354660 is a wasteful number, since it uses less digits than its factorization.

1128354660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268652 (or 6268647 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1128354660 is about 33590.9907564513. The cubic root of 1128354660 is about 1041.0746596067.

The spelling of 1128354660 in words is "one billion, one hundred twenty-eight million, three hundred fifty-four thousand, six hundred sixty".