1820146295552 has 72 divisors (see below), whose sum is σ = 3913685153616. Its totient is φ = 839847038976.

The previous prime is 1820146295549. The next prime is 1820146295579. The reversal of 1820146295552 is 2555926410281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820146295552.

It is an unprimeable number.

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, 12965963 + ... + 13105589.

Almost surely, 2^{1820146295552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1820146295552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956842576808).

1820146295552 is an abundant number, since it is smaller than the sum of its proper divisors (2093538858064).

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

1820146295552 is a wasteful number, since it uses less digits than its factorization.

1820146295552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143573 (or 143559 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 1820146295552 in words is "one trillion, eight hundred twenty billion, one hundred forty-six million, two hundred ninety-five thousand, five hundred fifty-two".