1801800154536 has 16 divisors (see below), whose sum is σ = 4504500386400. Its totient is φ = 600600051504.

The previous prime is 1801800154493. The next prime is 1801800154601. The reversal of 1801800154536 is 6354510081081.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37537503196 + ... + 37537503243.

It is an arithmetic number, because the mean of its divisors is an integer number (281531274150).

Almost surely, 2^{1801800154536} is an apocalyptic number.

It is an amenable number.

1801800154536 is an abundant number, since it is smaller than the sum of its proper divisors (2702700231864).

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

1801800154536 is a wasteful number, since it uses less digits than its factorization.

1801800154536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75075006448 (or 75075006444 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 1801800154536 in words is "one trillion, eight hundred one billion, eight hundred million, one hundred fifty-four thousand, five hundred thirty-six".