1005160020 has 48 divisors (see below), whose sum is σ = 2980006848. Its totient is φ = 252275200.

The previous prime is 1005159971. The next prime is 1005160031. The reversal of 1005160020 is 200615001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491706 + ... + 493745.

It is an arithmetic number, because the mean of its divisors is an integer number (62083476).

Almost surely, 2^1005160020 is an apocalyptic number.

1005160020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005160020 is an abundant number, since it is smaller than the sum of its proper divisors (1974846828).

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

1005160020 is a wasteful number, since it uses less digits than its factorization.

1005160020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985480 (or 985478 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1005160020 is about 31704.2587044706. The cubic root of 1005160020 is about 1001.7170566955.

Adding to 1005160020 its reverse (200615001), we get a palindrome (1205775021).

The spelling of 1005160020 in words is "one billion, five million, one hundred sixty thousand, twenty".