1822375720564 has 30 divisors (see below), whose sum is σ = 3720462405394. Its totient is φ = 781018161840.

The previous prime is 1822375720553. The next prime is 1822375720603. The reversal of 1822375720564 is 4650275732281.

It can be written as a sum of positive squares in only one way, i.e., 1155964724964 + 666410995600 = 1075158^2 + 816340^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 94866267 + ... + 94885474.

Almost surely, 2^{1822375720564} is an apocalyptic number.

1822375720564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1822375720564 is an abundant number, since it is smaller than the sum of its proper divisors (1898086684830).

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

1822375720564 is an equidigital number, since it uses as much as digits as its factorization.

1822375720564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189751773 (or 189751750 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 1822375720564 in words is "one trillion, eight hundred twenty-two billion, three hundred seventy-five million, seven hundred twenty thousand, five hundred sixty-four".