187320197456 has 40 divisors (see below), whose sum is σ = 415059744000. Its totient is φ = 80226025344.

The previous prime is 187320197447. The next prime is 187320197473. The reversal of 187320197456 is 654791023781.

It is a junction number, because it is equal to n+sod(n) for n = 187320197398 and 187320197407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395831 + ... + 728918.

It is an arithmetic number, because the mean of its divisors is an integer number (10376493600).

It is a 1-persistent number, because it is pandigital, but 2⋅187320197456 = 374640394912 is not.

Almost surely, 2^187320197456 is an apocalyptic number.

187320197456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

187320197456 is an abundant number, since it is smaller than the sum of its proper divisors (227739546544).

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

187320197456 is a wasteful number, since it uses less digits than its factorization.

187320197456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126251 (or 1126245 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 187320197456 in words is "one hundred eighty-seven billion, three hundred twenty million, one hundred ninety-seven thousand, four hundred fifty-six".