168953491 has 8 divisors (see below), whose sum is σ = 203252480. Its totient is φ = 137195208.

The previous prime is 168953483. The next prime is 168953513. The reversal of 168953491 is 194359861.

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 168953491 - 2³ = 168953483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168953461) 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, 635031 + ... + 635296.

It is an arithmetic number, because the mean of its divisors is an integer number (25406560).

Almost surely, 2^168953491 is an apocalyptic number.

168953491 is a deficient number, since it is larger than the sum of its proper divisors (34298989).

168953491 is a wasteful number, since it uses less digits than its factorization.

168953491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270353.

The product of its digits is 233280, while the sum is 46.

The square root of 168953491 is about 12998.2110692203. The cubic root of 168953491 is about 552.8267592023.

The spelling of 168953491 in words is "one hundred sixty-eight million, nine hundred fifty-three thousand, four hundred ninety-one".