1820862641024 has 64 divisors (see below), whose sum is σ = 4171148211840. Its totient is φ = 775582096896.

The previous prime is 1820862641009. The next prime is 1820862641041. The reversal of 1820862641024 is 4201462680281.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6087734 + ... + 6379829.

It is an arithmetic number, because the mean of its divisors is an integer number (65174190810).

Almost surely, 2^{1820862641024} is an apocalyptic number.

1820862641024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1820862641024 is an abundant number, since it is smaller than the sum of its proper divisors (2350285570816).

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

1820862641024 is a wasteful number, since it uses less digits than its factorization.

1820862641024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12467747 (or 12467735 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 1820862641024 in words is "one trillion, eight hundred twenty billion, eight hundred sixty-two million, six hundred forty-one thousand, twenty-four".