1128629655 has 24 divisors (see below), whose sum is σ = 1960843248. Its totient is φ = 600535296.

The previous prime is 1128629653. The next prime is 1128629669. The reversal of 1128629655 is 5569268211.

1128629655 is a `hidden beast` number, since 1 + 12 + 8 + 629 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 1128629655 - 2¹ = 1128629653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1128629655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128629653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9477 + ... + 48446.

It is an arithmetic number, because the mean of its divisors is an integer number (81701802).

Almost surely, 2^1128629655 is an apocalyptic number.

1128629655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1128629655 is a deficient number, since it is larger than the sum of its proper divisors (832213593).

1128629655 is a wasteful number, since it uses less digits than its factorization.

1128629655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58367 (or 58364 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 1128629655 is about 33595.0837921265. The cubic root of 1128629655 is about 1041.1592273057.

The spelling of 1128629655 in words is "one billion, one hundred twenty-eight million, six hundred twenty-nine thousand, six hundred fifty-five".