1823303561620 has 24 divisors (see below), whose sum is σ = 3829044275784. Its totient is φ = 729301082496.

The previous prime is 1823303561561. The next prime is 1823303561699. The reversal of 1823303561620 is 261653033281.

It can be written as a sum of positive squares in 4 ways, for example, as 558564906384 + 1264738655236 = 747372^2 + 1124606^2 .

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, 525739 + ... + 1980658.

It is an arithmetic number, because the mean of its divisors is an integer number (159543511491).

Almost surely, 2^{1823303561620} is an apocalyptic number.

1823303561620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1823303561620 is an abundant number, since it is smaller than the sum of its proper divisors (2005740714164).

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

1823303561620 is a wasteful number, since it uses less digits than its factorization.

1823303561620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542779 (or 2542777 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 1823303561620 in words is "one trillion, eight hundred twenty-three billion, three hundred three million, five hundred sixty-one thousand, six hundred twenty".