1012445020 has 24 divisors (see below), whose sum is σ = 2238037200. Its totient is φ = 383663232.

The previous prime is 1012445009. The next prime is 1012445033. The reversal of 1012445020 is 205442101.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 1331785 + ... + 1332544.

It is an arithmetic number, because the mean of its divisors is an integer number (93251550).

Almost surely, 2^1012445020 is an apocalyptic number.

1012445020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012445020 is an abundant number, since it is smaller than the sum of its proper divisors (1225592180).

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

1012445020 is a wasteful number, since it uses less digits than its factorization.

1012445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664357 (or 2664355 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1012445020 is about 31818.9412143145. The cubic root of 1012445020 is about 1004.1312492764.

Adding to 1012445020 its reverse (205442101), we get a palindrome (1217887121).

The spelling of 1012445020 in words is "one billion, twelve million, four hundred forty-five thousand, twenty".