1021019040 has 192 divisors, whose sum is σ = 3603640320. Its totient is φ = 269982720.

The previous prime is 1021019029. The next prime is 1021019063. The reversal of 1021019040 is 409101201.

1021019040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547710 + ... + 549570.

It is an arithmetic number, because the mean of its divisors is an integer number (18768960).

Almost surely, 2^1021019040 is an apocalyptic number.

1021019040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021019040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801820160).

1021019040 is an abundant number, since it is smaller than the sum of its proper divisors (2582621280).

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

1021019040 is a wasteful number, since it uses less digits than its factorization.

1021019040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1021019040 is about 31953.3885527028. The cubic root of 1021019040 is about 1006.9578230855.

The spelling of 1021019040 in words is "one billion, twenty-one million, nineteen thousand, forty".