135853173 has 32 divisors (see below), whose sum is σ = 213513600. Its totient is φ = 85131648.

The previous prime is 135853163. The next prime is 135853183. The reversal of 135853173 is 371358531.

It is a happy number.

135853173 is a `hidden beast` number, since 1 + 3 + 58 + 531 + 73 = 666.

It is an interprime number because it is at equal distance from previous prime (135853163) and next prime (135853183).

It is not a de Polignac number, because 135853173 - 2¹⁶ = 135787637 is a prime.

It is a super-2 number, since 2×135853173² = 36912169228335858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135853163) 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, 69315 + ... + 71247.

It is an arithmetic number, because the mean of its divisors is an integer number (6672300).

Almost surely, 2^135853173 is an apocalyptic number.

It is an amenable number.

135853173 is a deficient number, since it is larger than the sum of its proper divisors (77660427).

135853173 is a wasteful number, since it uses less digits than its factorization.

135853173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098 (or 2092 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 135853173 is about 11655.6069340039. The cubic root of 135853173 is about 514.0711860205.

The spelling of 135853173 in words is "one hundred thirty-five million, eight hundred fifty-three thousand, one hundred seventy-three".