165831479 has 8 divisors (see below), whose sum is σ = 181341840. Its totient is φ = 150393600.

The previous prime is 165831467. The next prime is 165831503. The reversal of 165831479 is 974138561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165831479 - 2²⁰ = 164782903 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 (165831409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13274 + ... + 22535.

It is an arithmetic number, because the mean of its divisors is an integer number (22667730).

Almost surely, 2^165831479 is an apocalyptic number.

165831479 is a deficient number, since it is larger than the sum of its proper divisors (15510361).

165831479 is a wasteful number, since it uses less digits than its factorization.

165831479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36241.

The product of its digits is 181440, while the sum is 44.

The square root of 165831479 is about 12877.5571829443. The cubic root of 165831479 is about 549.4004254078.

The spelling of 165831479 in words is "one hundred sixty-five million, eight hundred thirty-one thousand, four hundred seventy-nine".