1819125664788 has 24 divisors (see below), whose sum is σ = 4275609230592. Its totient is φ = 601949124544.

The previous prime is 1819125664781. The next prime is 1819125664819. The reversal of 1819125664788 is 8874665219181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819125664781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553260420 + ... + 553263707.

It is an arithmetic number, because the mean of its divisors is an integer number (178150384608).

Almost surely, 2^{1819125664788} is an apocalyptic number.

It is an amenable number.

1819125664788 is an abundant number, since it is smaller than the sum of its proper divisors (2456483565804).

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

1819125664788 is a wasteful number, since it uses less digits than its factorization.

1819125664788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106524271 (or 1106524269 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 66.

The spelling of 1819125664788 in words is "one trillion, eight hundred nineteen billion, one hundred twenty-five million, six hundred sixty-four thousand, seven hundred eighty-eight".