171941913 has 32 divisors (see below), whose sum is σ = 299268480. Its totient is φ = 96189120.

The previous prime is 171941897. The next prime is 171941929. The reversal of 171941913 is 319149171.

It is an interprime number because it is at equal distance from previous prime (171941897) and next prime (171941929).

It is not a de Polignac number, because 171941913 - 2⁴ = 171941897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171943913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18406 + ... + 26127.

It is an arithmetic number, because the mean of its divisors is an integer number (9352140).

Almost surely, 2^171941913 is an apocalyptic number.

171941913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

171941913 is a deficient number, since it is larger than the sum of its proper divisors (127326567).

171941913 is a wasteful number, since it uses less digits than its factorization.

171941913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44566 (or 44560 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 171941913 is about 13112.6623154873. The cubic root of 171941913 is about 556.0671651259.

The spelling of 171941913 in words is "one hundred seventy-one million, nine hundred forty-one thousand, nine hundred thirteen".