1085557216 has 12 divisors (see below), whose sum is σ = 2137190832. Its totient is φ = 542778592.

The previous prime is 1085557211. The next prime is 1085557223. The reversal of 1085557216 is 6127555801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085557211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16961800 + ... + 16961863.

It is an arithmetic number, because the mean of its divisors is an integer number (178099236).

Almost surely, 2^1085557216 is an apocalyptic number.

1085557216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1085557216 is a deficient number, since it is larger than the sum of its proper divisors (1051633616).

1085557216 is an equidigital number, since it uses as much as digits as its factorization.

1085557216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33923673 (or 33923665 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The square root of 1085557216 is about 32947.7953131920. The cubic root of 1085557216 is about 1027.7423185944.

The spelling of 1085557216 in words is "one billion, eighty-five million, five hundred fifty-seven thousand, two hundred sixteen".