1020016205 has 8 divisors (see below), whose sum is σ = 1318174872. Its totient is φ = 753242688.

The previous prime is 1020016169. The next prime is 1020016229. The reversal of 1020016205 is 5026100201.

It can be written as a sum of positive squares in 4 ways, for example, as 17280649 + 1002735556 = 4157^2 + 31666^2 .

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 1020016205 - 2¹⁴ = 1019999821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7846214 + ... + 7846343.

It is an arithmetic number, because the mean of its divisors is an integer number (164771859).

Almost surely, 2^1020016205 is an apocalyptic number.

It is an amenable number.

1020016205 is a deficient number, since it is larger than the sum of its proper divisors (298158667).

1020016205 is a wasteful number, since it uses less digits than its factorization.

1020016205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692575.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1020016205 is about 31937.6925434509. The cubic root of 1020016205 is about 1006.6280403557.

Adding to 1020016205 its reverse (5026100201), we get a palindrome (6046116406).

The spelling of 1020016205 in words is "one billion, twenty million, sixteen thousand, two hundred five".