187383829217 has 16 divisors (see below), whose sum is σ = 202424494272. Its totient is φ = 172433499840.

The previous prime is 187383829169. The next prime is 187383829231. The reversal of 187383829217 is 712928383781.

It is a cyclic number.

It is not a de Polignac number, because 187383829217 - 2¹² = 187383825121 is a prime.

It is a super-2 number, since 2×187383829217² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (187383829267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5602538 + ... + 5635884.

It is an arithmetic number, because the mean of its divisors is an integer number (12651530892).

Almost surely, 2^187383829217 is an apocalyptic number.

It is an amenable number.

187383829217 is a deficient number, since it is larger than the sum of its proper divisors (15040665055).

187383829217 is a wasteful number, since it uses less digits than its factorization.

187383829217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34688.

The product of its digits is 8128512, while the sum is 59.

The spelling of 187383829217 in words is "one hundred eighty-seven billion, three hundred eighty-three million, eight hundred twenty-nine thousand, two hundred seventeen".