1128057645 has 128 divisors (see below), whose sum is σ = 2264371200. Its totient is φ = 471398400.

The previous prime is 1128057613. The next prime is 1128057649. The reversal of 1128057645 is 5467508211.

It is not a de Polignac number, because 1128057645 - 2⁵ = 1128057613 is a prime.

It is a super-3 number, since 3×1128057645³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128057649) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3627040 + ... + 3627350.

It is an arithmetic number, because the mean of its divisors is an integer number (17690400).

Almost surely, 2^1128057645 is an apocalyptic number.

1128057645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128057645 is an abundant number, since it is smaller than the sum of its proper divisors (1136313555).

1128057645 is a wasteful number, since it uses less digits than its factorization.

1128057645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 1128057645 is about 33586.5694139786. The cubic root of 1128057645 is about 1040.9833047824.

The spelling of 1128057645 in words is "one billion, one hundred twenty-eight million, fifty-seven thousand, six hundred forty-five".