1090431216 has 60 divisors (see below), whose sum is σ = 3487652272. Its totient is φ = 311551488.

The previous prime is 1090431193. The next prime is 1090431217. The reversal of 1090431216 is 6121340901.

1090431216 is a `hidden beast` number, since 10 + 9 + 0 + 431 + 216 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1090431216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090431217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 539881 + ... + 541896.

Almost surely, 2^1090431216 is an apocalyptic number.

1090431216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1090431216 is an abundant number, since it is smaller than the sum of its proper divisors (2397221056).

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

1090431216 is a wasteful number, since it uses less digits than its factorization.

1090431216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081798 (or 1081789 counting only the distinct ones).

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

The square root of 1090431216 is about 33021.6779706907. The cubic root of 1090431216 is about 1029.2781620421.

The spelling of 1090431216 in words is "one billion, ninety million, four hundred thirty-one thousand, two hundred sixteen".