1019522920840 has 32 divisors (see below), whose sum is σ = 2428863430680. Its totient is φ = 383820393472.

The previous prime is 1019522920831. The next prime is 1019522920847. The reversal of 1019522920840 is 480292259101.

It can be written as a sum of positive squares in 4 ways, for example, as 828744405316 + 190778515524 = 910354^2 + 436782^2 .

It is a super-2 number, since 2×1019522920840² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1019522920847) by changing a digit.

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, 749648527 + ... + 749649886.

Almost surely, 2^{1019522920840} is an apocalyptic number.

1019522920840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019522920840 is an abundant number, since it is smaller than the sum of its proper divisors (1409340509840).

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

1019522920840 is a wasteful number, since it uses less digits than its factorization.

1019522920840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499298441 (or 1499298437 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 1019522920840 in words is "one trillion, nineteen billion, five hundred twenty-two million, nine hundred twenty thousand, eight hundred forty".