1801755397974 has 96 divisors (see below), whose sum is σ = 4238772076800. Its totient is φ = 509055357888.

The previous prime is 1801755397913. The next prime is 1801755398029. The reversal of 1801755397974 is 4797935571081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9442012 + ... + 9630944.

It is an arithmetic number, because the mean of its divisors is an integer number (44153875800).

Almost surely, 2^{1801755397974} is an apocalyptic number.

1801755397974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801755397974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2119386038400).

1801755397974 is an abundant number, since it is smaller than the sum of its proper divisors (2437016678826).

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

1801755397974 is a wasteful number, since it uses less digits than its factorization.

1801755397974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189314 (or 189307 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 66.

The spelling of 1801755397974 in words is "one trillion, eight hundred one billion, seven hundred fifty-five million, three hundred ninety-seven thousand, nine hundred seventy-four".