1081216895 has 16 divisors (see below), whose sum is σ = 1416074400. Its totient is φ = 785971200.

The previous prime is 1081216841. The next prime is 1081216931. The reversal of 1081216895 is 5986121801.

It is not a de Polignac number, because 1081216895 - 2¹² = 1081212799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181931 + ... + 187779.

It is an arithmetic number, because the mean of its divisors is an integer number (88504650).

Almost surely, 2^1081216895 is an apocalyptic number.

1081216895 is a deficient number, since it is larger than the sum of its proper divisors (334857505).

1081216895 is a wasteful number, since it uses less digits than its factorization.

1081216895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226.

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 1081216895 is about 32881.8627057532. The cubic root of 1081216895 is about 1026.3707680298.

The spelling of 1081216895 in words is "one billion, eighty-one million, two hundred sixteen thousand, eight hundred ninety-five".