1091009292 has 12 divisors (see below), whose sum is σ = 2545688376. Its totient is φ = 363669760.

The previous prime is 1091009281. The next prime is 1091009299. The reversal of 1091009292 is 2929001901.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1091009299) 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 3 ways as a sum of consecutive naturals, for example, 45458709 + ... + 45458732.

It is an arithmetic number, because the mean of its divisors is an integer number (212140698).

Almost surely, 2^1091009292 is an apocalyptic number.

1091009292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1091009292 is an abundant number, since it is smaller than the sum of its proper divisors (1454679084).

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

1091009292 is a wasteful number, since it uses less digits than its factorization.

1091009292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90917448 (or 90917446 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1091009292 is about 33030.4297883028. The cubic root of 1091009292 is about 1029.4600154476.

The spelling of 1091009292 in words is "one billion, ninety-one million, nine thousand, two hundred ninety-two".