1128641616 has 60 divisors (see below), whose sum is σ = 3160898260. Its totient is φ = 375943680.

The previous prime is 1128641603. The next prime is 1128641623. The reversal of 1128641616 is 6161468211.

1128641616 is a `hidden beast` number, since 1 + 1 + 2 + 8 + 641 + 6 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59351616 + 1069290000 = 7704^2 + 32700^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 361470 + ... + 364578.

Almost surely, 2^1128641616 is an apocalyptic number.

1128641616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1128641616 is an abundant number, since it is smaller than the sum of its proper divisors (2032256644).

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

1128641616 is a wasteful number, since it uses less digits than its factorization.

1128641616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644 (or 5635 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1128641616 is about 33595.2618087730. The cubic root of 1128641616 is about 1041.1629052944.

The spelling of 1128641616 in words is "one billion, one hundred twenty-eight million, six hundred forty-one thousand, six hundred sixteen".