171374749 has 16 divisors (see below), whose sum is σ = 211238272. Its totient is φ = 135390528.

The previous prime is 171374747. The next prime is 171374767. The reversal of 171374749 is 947473171.

It is not a de Polignac number, because 171374749 - 2¹ = 171374747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171374743) 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, 98602 + ... + 100324.

It is an arithmetic number, because the mean of its divisors is an integer number (13202392).

Almost surely, 2^171374749 is an apocalyptic number.

It is an amenable number.

171374749 is a deficient number, since it is larger than the sum of its proper divisors (39863523).

171374749 is a wasteful number, since it uses less digits than its factorization.

171374749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836.

The product of its digits is 148176, while the sum is 43.

The square root of 171374749 is about 13091.0178748637. The cubic root of 171374749 is about 555.4550811203.

The spelling of 171374749 in words is "one hundred seventy-one million, three hundred seventy-four thousand, seven hundred forty-nine".