1971705107 has 24 divisors (see below), whose sum is σ = 2201838624. Its totient is φ = 1761699456.

The previous prime is 1971705097. The next prime is 1971705119. The reversal of 1971705107 is 7015071791.

It is not a de Polignac number, because 1971705107 - 2⁴ = 1971705091 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1971705007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604493 + ... + 607745.

It is an arithmetic number, because the mean of its divisors is an integer number (91743276).

Almost surely, 2^1971705107 is an apocalyptic number.

1971705107 is a deficient number, since it is larger than the sum of its proper divisors (230133517).

1971705107 is a wasteful number, since it uses less digits than its factorization.

1971705107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387 (or 3368 counting only the distinct ones).

The product of its (nonzero) digits is 15435, while the sum is 38.

The square root of 1971705107 is about 44403.8861700189. The cubic root of 1971705107 is about 1253.9512530791.

Adding to 1971705107 its reverse (7015071791), we get a palindrome (8986776898).

The spelling of 1971705107 in words is "one billion, nine hundred seventy-one million, seven hundred five thousand, one hundred seven".