1019382820 has 24 divisors (see below), whose sum is σ = 2167804800. Its totient is φ = 402591072.

The previous prime is 1019382817. The next prime is 1019382821. The reversal of 1019382820 is 282839101.

It is a super-2 number, since 2×1019382820² = 2078282667422304800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1019382821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321010 + ... + 324169.

It is an arithmetic number, because the mean of its divisors is an integer number (90325200).

Almost surely, 2^1019382820 is an apocalyptic number.

1019382820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019382820 is an abundant number, since it is smaller than the sum of its proper divisors (1148421980).

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

1019382820 is a wasteful number, since it uses less digits than its factorization.

1019382820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645267 (or 645265 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1019382820 is about 31927.7750555844. The cubic root of 1019382820 is about 1006.4196400336.

The spelling of 1019382820 in words is "one billion, nineteen million, three hundred eighty-two thousand, eight hundred twenty".