1820554653338 has 16 divisors (see below), whose sum is σ = 2732487367680. Its totient is φ = 909725622000.

The previous prime is 1820554653301. The next prime is 1820554653403. The reversal of 1820554653338 is 8333564550281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820554653338.

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, 72841748 + ... + 72866736.

It is an arithmetic number, because the mean of its divisors is an integer number (170780460480).

Almost surely, 2^{1820554653338} is an apocalyptic number.

1820554653338 is a deficient number, since it is larger than the sum of its proper divisors (911932714342).

1820554653338 is a wasteful number, since it uses less digits than its factorization.

1820554653338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45613.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 1820554653338 in words is "one trillion, eight hundred twenty billion, five hundred fifty-four million, six hundred fifty-three thousand, three hundred thirty-eight".