187434699648 has 192 divisors, whose sum is σ = 609642086400. Its totient is φ = 50734107648.

The previous prime is 187434699601. The next prime is 187434699659. The reversal of 187434699648 is 846996434781.

It is a happy number.

187434699648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

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 23 ways as a sum of consecutive naturals, for example, 95361 + ... + 619647.

It is an arithmetic number, because the mean of its divisors is an integer number (3175219200).

Almost surely, 2^187434699648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187434699648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304821043200).

187434699648 is an abundant number, since it is smaller than the sum of its proper divisors (422207386752).

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

187434699648 is a wasteful number, since it uses less digits than its factorization.

187434699648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524337 (or 524318 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 69.

The spelling of 187434699648 in words is "one hundred eighty-seven billion, four hundred thirty-four million, six hundred ninety-nine thousand, six hundred forty-eight".