1020172016 has 40 divisors (see below), whose sum is σ = 2111710080. Its totient is φ = 476017344.

The previous prime is 1020172001. The next prime is 1020172031. The reversal of 1020172016 is 6102710201.

It is an interprime number because it is at equal distance from previous prime (1020172001) and next prime (1020172031).

It is a congruent number.

It is an unprimeable number.

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, 4676 + ... + 45411.

It is an arithmetic number, because the mean of its divisors is an integer number (52792752).

Almost surely, 2^1020172016 is an apocalyptic number.

1020172016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1020172016 is an abundant number, since it is smaller than the sum of its proper divisors (1091538064).

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

1020172016 is a wasteful number, since it uses less digits than its factorization.

1020172016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50181 (or 50175 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1020172016 is about 31940.1317467540. The cubic root of 1020172016 is about 1006.6792930500.

Adding to 1020172016 its reverse (6102710201), we get a palindrome (7122882217).

The spelling of 1020172016 in words is "one billion, twenty million, one hundred seventy-two thousand, sixteen".