1020170955 has 64 divisors (see below), whose sum is σ = 1716940800. Its totient is φ = 516848640.

The previous prime is 1020170953. The next prime is 1020170981. The reversal of 1020170955 is 5590710201.

It is not a de Polignac number, because 1020170955 - 2¹ = 1020170953 is a prime.

It is a super-2 number, since 2×1020170955² = 2081497554851224050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020170953) 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 63 ways as a sum of consecutive naturals, for example, 4454781 + ... + 4455009.

It is an arithmetic number, because the mean of its divisors is an integer number (26827200).

Almost surely, 2^1020170955 is an apocalyptic number.

1020170955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020170955 is a deficient number, since it is larger than the sum of its proper divisors (696769845).

1020170955 is a wasteful number, since it uses less digits than its factorization.

1020170955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 1020170955 is about 31940.1151375508. The cubic root of 1020170955 is about 1006.6789440608.

The spelling of 1020170955 in words is "one billion, twenty million, one hundred seventy thousand, nine hundred fifty-five".