187963472465 has 8 divisors (see below), whose sum is σ = 226202461800. Its totient is φ = 149939914752.

The previous prime is 187963472357. The next prime is 187963472471. The reversal of 187963472465 is 564274369781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3014449216 + 184949023249 = 54904^2 + 430057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187963472465 - 2²² = 187959278161 is a prime.

It is a super-2 number, since 2×187963472465² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 187963472398 and 187963472407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53855984 + ... + 53859473.

It is an arithmetic number, because the mean of its divisors is an integer number (28275307725).

Almost surely, 2^187963472465 is an apocalyptic number.

It is an amenable number.

187963472465 is a deficient number, since it is larger than the sum of its proper divisors (38238989335).

187963472465 is a wasteful number, since it uses less digits than its factorization.

187963472465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107715811.

The product of its digits is 60963840, while the sum is 62.

The spelling of 187963472465 in words is "one hundred eighty-seven billion, nine hundred sixty-three million, four hundred seventy-two thousand, four hundred sixty-five".