1016442491 has 8 divisors (see below), whose sum is σ = 1022277984. Its totient is φ = 1010623680.

The previous prime is 1016442481. The next prime is 1016442499. The reversal of 1016442491 is 1942446101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016442491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016442499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130106 + ... + 137696.

It is an arithmetic number, because the mean of its divisors is an integer number (127784748).

Almost surely, 2^1016442491 is an apocalyptic number.

1016442491 is a deficient number, since it is larger than the sum of its proper divisors (5835493).

1016442491 is an equidigital number, since it uses as much as digits as its factorization.

1016442491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1016442491 is about 31881.6952340995. The cubic root of 1016442491 is about 1005.4510622624.

Adding to 1016442491 its reverse (1942446101), we get a palindrome (2958888592).

The spelling of 1016442491 in words is "one billion, sixteen million, four hundred forty-two thousand, four hundred ninety-one".