1128319930 has 16 divisors (see below), whose sum is σ = 2059582464. Its totient is φ = 444970960.

The previous prime is 1128319919. The next prime is 1128319939. The reversal of 1128319930 is 399138211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128319930.

It is not an unprimeable number, because it can be changed into a prime (1128319939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793882 + ... + 795301.

It is an arithmetic number, because the mean of its divisors is an integer number (128723904).

Almost surely, 2^1128319930 is an apocalyptic number.

1128319930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128319930 is a deficient number, since it is larger than the sum of its proper divisors (931262534).

1128319930 is a wasteful number, since it uses less digits than its factorization.

1128319930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589261.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1128319930 is about 33590.4737983852. The cubic root of 1128319930 is about 1041.0639783038.

It can be divided in two parts, 11283 and 19930, that added together give a palindrome (31213).

The spelling of 1128319930 in words is "one billion, one hundred twenty-eight million, three hundred nineteen thousand, nine hundred thirty".