1216041093 has 20 divisors (see below), whose sum is σ = 1923413580. Its totient is φ = 763005312.

The previous prime is 1216041023. The next prime is 1216041103. The reversal of 1216041093 is 3901406121.

1216041093 is a `hidden beast` number, since 1 + 2 + 160 + 410 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 817559649 + 398481444 = 28593^2 + 19962^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1216041093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216041023) 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 19 ways as a sum of consecutive naturals, for example, 440178 + ... + 442931.

It is an arithmetic number, because the mean of its divisors is an integer number (96170679).

Almost surely, 2^1216041093 is an apocalyptic number.

It is an amenable number.

1216041093 is a deficient number, since it is larger than the sum of its proper divisors (707372487).

1216041093 is an equidigital number, since it uses as much as digits as its factorization.

1216041093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883138 (or 883129 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1216041093 is about 34871.7807546446. The cubic root of 1216041093 is about 1067.3726826679.

The spelling of 1216041093 in words is "one billion, two hundred sixteen million, forty-one thousand, ninety-three".