1088638730 has 16 divisors (see below), whose sum is σ = 1960515144. Its totient is φ = 435240960.

The previous prime is 1088638729. The next prime is 1088638739. The reversal of 1088638730 is 378368801.

It can be written as a sum of positive squares in 4 ways, for example, as 121242121 + 967396609 = 11011^2 + 31103^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1088638739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631 + ... + 46890.

Almost surely, 2^1088638730 is an apocalyptic number.

1088638730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1088638730 is a deficient number, since it is larger than the sum of its proper divisors (871876414).

1088638730 is a wasteful number, since it uses less digits than its factorization.

1088638730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53641.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1088638730 is about 32994.5257580708. The cubic root of 1088638730 is about 1028.7138658471.

The spelling of 1088638730 in words is "one billion, eighty-eight million, six hundred thirty-eight thousand, seven hundred thirty".