172618141 has 4 divisors (see below), whose sum is σ = 173677312. Its totient is φ = 171558972.

The previous prime is 172618109. The next prime is 172618157. The reversal of 172618141 is 141816271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 172618141 - 2⁵ = 172618109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172618181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529341 + ... + 529666.

It is an arithmetic number, because the mean of its divisors is an integer number (43419328).

Almost surely, 2^172618141 is an apocalyptic number.

It is an amenable number.

172618141 is a deficient number, since it is larger than the sum of its proper divisors (1059171).

172618141 is a wasteful number, since it uses less digits than its factorization.

172618141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059170.

The product of its digits is 2688, while the sum is 31.

The square root of 172618141 is about 13138.4223177671. The cubic root of 172618141 is about 556.7951945244.

The spelling of 172618141 in words is "one hundred seventy-two million, six hundred eighteen thousand, one hundred forty-one".