187897393368 has 24 divisors (see below), whose sum is σ = 508888773900. Its totient is φ = 62632464432.

The previous prime is 187897393339. The next prime is 187897393403. The reversal of 187897393368 is 863393798781.

187897393368 is a `hidden beast` number, since 187 + 89 + 7 + 3 + 9 + 3 + 368 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 2609686019 = 187897393368 / (1 + 8 + 7 + 8 + 9 + 7 + 3 + 9 + 3 + 3 + 6 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 187897393296 and 187897393305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1304842938 + ... + 1304843081.

Almost surely, 2^187897393368 is an apocalyptic number.

187897393368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

187897393368 is an abundant number, since it is smaller than the sum of its proper divisors (320991380532).

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

187897393368 is a wasteful number, since it uses less digits than its factorization.

187897393368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609686031 (or 2609686024 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The spelling of 187897393368 in words is "one hundred eighty-seven billion, eight hundred ninety-seven million, three hundred ninety-three thousand, three hundred sixty-eight".