170158945 has 16 divisors (see below), whose sum is σ = 232440192. Its totient is φ = 118370560.

The previous prime is 170158931. The next prime is 170158949. The reversal of 170158945 is 549851071.

It is a happy number.

It is not a de Polignac number, because 170158945 - 2¹¹ = 170156897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170158898 and 170158907.

It is not an unprimeable number, because it can be changed into a prime (170158949) 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, 65992 + ... + 68521.

It is an arithmetic number, because the mean of its divisors is an integer number (14527512).

Almost surely, 2^170158945 is an apocalyptic number.

It is an amenable number.

170158945 is a deficient number, since it is larger than the sum of its proper divisors (62281247).

170158945 is a wasteful number, since it uses less digits than its factorization.

170158945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134552.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 170158945 is about 13044.4986488558. The cubic root of 170158945 is about 554.1384191480.

The spelling of 170158945 in words is "one hundred seventy million, one hundred fifty-eight thousand, nine hundred forty-five".