1801363681791 has 48 divisors (see below), whose sum is σ = 2625623320320. Its totient is φ = 1190043429120.

The previous prime is 1801363681769. The next prime is 1801363681807. The reversal of 1801363681791 is 1971863631081.

1801363681791 is a `hidden beast` number, since 1 + 80 + 1 + 36 + 368 + 179 + 1 = 666.

It is not a de Polignac number, because 1801363681791 - 2⁶ = 1801363681727 is a prime.

It is a super-2 number, since 2×1801363681791² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801363682791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 961752231 + ... + 961754103.

It is an arithmetic number, because the mean of its divisors is an integer number (54700485840).

Almost surely, 2^{1801363681791} is an apocalyptic number.

1801363681791 is a deficient number, since it is larger than the sum of its proper divisors (824259638529).

1801363681791 is a wasteful number, since it uses less digits than its factorization.

1801363681791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676 (or 3673 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 1801363681791 in words is "one trillion, eight hundred one billion, three hundred sixty-three million, six hundred eighty-one thousand, seven hundred ninety-one".