1089398830 has 32 divisors (see below), whose sum is σ = 2114519904. Its totient is φ = 401713536.

The previous prime is 1089398813. The next prime is 1089398837. The reversal of 1089398830 is 388939801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089398837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102444 + ... + 112576.

It is an arithmetic number, because the mean of its divisors is an integer number (66078747).

Almost surely, 2^1089398830 is an apocalyptic number.

1089398830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089398830 is a deficient number, since it is larger than the sum of its proper divisors (1025121074).

1089398830 is a wasteful number, since it uses less digits than its factorization.

1089398830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1089398830 is about 33006.0423256106. The cubic root of 1089398830 is about 1028.9532300718.

The spelling of 1089398830 in words is "one billion, eighty-nine million, three hundred ninety-eight thousand, eight hundred thirty".