1016521434 has 64 divisors (see below), whose sum is σ = 2341186560. Its totient is φ = 326592000.

The previous prime is 1016521433. The next prime is 1016521453. The reversal of 1016521434 is 4341256101.

It is a happy number.

1016521434 is a `hidden beast` number, since 1 + 0 + 1 + 652 + 1 + 4 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1016521398 and 1016521407.

It is not an unprimeable number, because it can be changed into a prime (1016521433) 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 31 ways as a sum of consecutive naturals, for example, 469314 + ... + 471474.

It is an arithmetic number, because the mean of its divisors is an integer number (36581040).

Almost surely, 2^1016521434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1016521434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1170593280).

1016521434 is an abundant number, since it is smaller than the sum of its proper divisors (1324665126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1016521434 is a wasteful number, since it uses less digits than its factorization.

1016521434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1016521434 is about 31882.9332715796. The cubic root of 1016521434 is about 1005.4770913686.

Adding to 1016521434 its reverse (4341256101), we get a palindrome (5357777535).

The spelling of 1016521434 in words is "one billion, sixteen million, five hundred twenty-one thousand, four hundred thirty-four".