173438985 has 16 divisors (see below), whose sum is σ = 277683840. Its totient is φ = 92440320.

The previous prime is 173438983. The next prime is 173438987. The reversal of 173438985 is 589834371.

It is an interprime number because it is at equal distance from previous prime (173438983) and next prime (173438987).

It is not a de Polignac number, because 173438985 - 2¹ = 173438983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173438983) 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, 29220 + ... + 34650.

It is an arithmetic number, because the mean of its divisors is an integer number (17355240).

Almost surely, 2^173438985 is an apocalyptic number.

173438985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

173438985 is a deficient number, since it is larger than the sum of its proper divisors (104244855).

173438985 is a wasteful number, since it uses less digits than its factorization.

173438985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568.

The product of its digits is 725760, while the sum is 48.

The square root of 173438985 is about 13169.6235709302. The cubic root of 173438985 is about 557.6763677483.

The spelling of 173438985 in words is "one hundred seventy-three million, four hundred thirty-eight thousand, nine hundred eighty-five".