1094271921 has 12 divisors (see below), whose sum is σ = 1663805520. Its totient is φ = 691119000.

The previous prime is 1094271889. The next prime is 1094271947. The reversal of 1094271921 is 1291724901.

It is not a de Polignac number, because 1094271921 - 2⁵ = 1094271889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1094271991) 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 11 ways as a sum of consecutive naturals, for example, 3199455 + ... + 3199796.

It is an arithmetic number, because the mean of its divisors is an integer number (138650460).

Almost surely, 2^1094271921 is an apocalyptic number.

It is an amenable number.

1094271921 is a deficient number, since it is larger than the sum of its proper divisors (569533599).

1094271921 is a wasteful number, since it uses less digits than its factorization.

1094271921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399276 (or 6399273 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1094271921 is about 33079.7811510294. The cubic root of 1094271921 is about 1030.4851834890.

The spelling of 1094271921 in words is "one billion, ninety-four million, two hundred seventy-one thousand, nine hundred twenty-one".