1091006730 has 48 divisors (see below), whose sum is σ = 3094494624. Its totient is φ = 264486240.

The previous prime is 1091006717. The next prime is 1091006731. The reversal of 1091006730 is 376001901.

It is a junction number, because it is equal to n+sod(n) for n = 1091006694 and 1091006703.

It is not an unprimeable number, because it can be changed into a prime (1091006731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550024 + ... + 552003.

It is an arithmetic number, because the mean of its divisors is an integer number (64468638).

Almost surely, 2^1091006730 is an apocalyptic number.

1091006730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1091006730 is an abundant number, since it is smaller than the sum of its proper divisors (2003487894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091006730 is a wasteful number, since it uses less digits than its factorization.

1091006730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102051 (or 1102048 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1091006730 is about 33030.3910058600. The cubic root of 1091006730 is about 1029.4592096253.

The spelling of 1091006730 in words is "one billion, ninety-one million, six thousand, seven hundred thirty".