1853604497340 has 240 divisors, whose sum is σ = 6046534327680. Its totient is φ = 474774773760.

The previous prime is 1853604497183. The next prime is 1853604497347. The reversal of 1853604497340 is 437944063581.

1853604497340 is a `hidden beast` number, since 1 + 8 + 53 + 60 + 4 + 497 + 3 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1853604497347) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8964925 + ... + 9169355.

It is an arithmetic number, because the mean of its divisors is an integer number (25193893032).

Almost surely, 2^{1853604497340} is an apocalyptic number.

1853604497340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1853604497340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3023267163840).

1853604497340 is an abundant number, since it is smaller than the sum of its proper divisors (4192929830340).

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

1853604497340 is a wasteful number, since it uses less digits than its factorization.

1853604497340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204674 (or 204663 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 1853604497340 in words is "one trillion, eight hundred fifty-three billion, six hundred four million, four hundred ninety-seven thousand, three hundred forty".