6181874640 has 200 divisors, whose sum is σ = 21552825888. Its totient is φ = 1642187520.

The previous prime is 6181874591. The next prime is 6181874681. The reversal of 6181874640 is 464781816.

6181874640 is a `hidden beast` number, since 6 + 1 + 8 + 187 + 464 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1832155 + ... + 1835525.

Almost surely, 2^6181874640 is an apocalyptic number.

6181874640 is a gapful number since it is divisible by the number (60) 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 6181874640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10776412944).

6181874640 is an abundant number, since it is smaller than the sum of its proper divisors (15370951248).

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

6181874640 is a wasteful number, since it uses less digits than its factorization.

6181874640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 6181874640 is about 78624.8983465162. The cubic root of 6181874640 is about 1835.2985914875.

The spelling of 6181874640 in words is "six billion, one hundred eighty-one million, eight hundred seventy-four thousand, six hundred forty".