1012166020 has 48 divisors (see below), whose sum is σ = 2143709568. Its totient is φ = 401425920.

The previous prime is 1012166017. The next prime is 1012166021. The reversal of 1012166020 is 206612101.

It is not an unprimeable number, because it can be changed into a prime (1012166021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1772335 + ... + 1772905.

It is an arithmetic number, because the mean of its divisors is an integer number (44660616).

Almost surely, 2^1012166020 is an apocalyptic number.

1012166020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012166020 is an abundant number, since it is smaller than the sum of its proper divisors (1131543548).

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

1012166020 is a wasteful number, since it uses less digits than its factorization.

1012166020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1012166020 is about 31814.5567311569. The cubic root of 1012166020 is about 1004.0390044793.

Adding to 1012166020 its reverse (206612101), we get a palindrome (1218778121).

The spelling of 1012166020 in words is "one billion, twelve million, one hundred sixty-six thousand, twenty".