1016216491 has 8 divisors (see below), whose sum is σ = 1023611904. Its totient is φ = 1008835560.

The previous prime is 1016216489. The next prime is 1016216519. The reversal of 1016216491 is 1946126101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1016216491 - 2¹ = 1016216489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016216431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165030 + ... + 171076.

It is an arithmetic number, because the mean of its divisors is an integer number (127951488).

Almost surely, 2^1016216491 is an apocalyptic number.

1016216491 is a deficient number, since it is larger than the sum of its proper divisors (7395413).

1016216491 is a wasteful number, since it uses less digits than its factorization.

1016216491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1016216491 is about 31878.1506835011. The cubic root of 1016216491 is about 1005.3765380320.

The spelling of 1016216491 in words is "one billion, sixteen million, two hundred sixteen thousand, four hundred ninety-one".