1016728511 has 4 divisors (see below), whose sum is σ = 1016818272. Its totient is φ = 1016638752.

The previous prime is 1016728477. The next prime is 1016728529. The reversal of 1016728511 is 1158276101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1158276101 = 67 ⋅17287703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016728511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016728561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24935 + ... + 51528.

It is an arithmetic number, because the mean of its divisors is an integer number (254204568).

Almost surely, 2^1016728511 is an apocalyptic number.

1016728511 is a deficient number, since it is larger than the sum of its proper divisors (89761).

1016728511 is an equidigital number, since it uses as much as digits as its factorization.

1016728511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89760.

The product of its (nonzero) digits is 3360, while the sum is 32.

The square root of 1016728511 is about 31886.1805646271. The cubic root of 1016728511 is about 1005.5453624468.

The spelling of 1016728511 in words is "one billion, sixteen million, seven hundred twenty-eight thousand, five hundred eleven".