1090928291 has 4 divisors (see below), whose sum is σ = 1095692400. Its totient is φ = 1086164184.

The previous prime is 1090928227. The next prime is 1090928297. The reversal of 1090928291 is 1928290901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1928290901 = 24877 ⋅77513.

It is a cyclic number.

It is not a de Polignac number, because 1090928291 - 2⁶ = 1090928227 is a prime.

It is a super-2 number, since 2×1090928291² = 2380249072208361362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090928297) 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, 2381711 + ... + 2382168.

It is an arithmetic number, because the mean of its divisors is an integer number (273923100).

Almost surely, 2^1090928291 is an apocalyptic number.

1090928291 is a deficient number, since it is larger than the sum of its proper divisors (4764109).

1090928291 is an equidigital number, since it uses as much as digits as its factorization.

1090928291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764108.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 1090928291 is about 33029.2036083221. The cubic root of 1090928291 is about 1029.4345377072.

The spelling of 1090928291 in words is "one billion, ninety million, nine hundred twenty-eight thousand, two hundred ninety-one".