169019427 has 8 divisors (see below), whose sum is σ = 226742464. Its totient is φ = 111988008.

The previous prime is 169019407. The next prime is 169019467. The reversal of 169019427 is 724910961.

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

It is not a de Polignac number, because 169019427 - 2¹⁶ = 168953891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169019407) 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, 172333 + ... + 173310.

It is an arithmetic number, because the mean of its divisors is an integer number (28342808).

Almost surely, 2^169019427 is an apocalyptic number.

169019427 is a deficient number, since it is larger than the sum of its proper divisors (57723037).

169019427 is a wasteful number, since it uses less digits than its factorization.

169019427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345809.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 169019427 is about 13000.7471708360. The cubic root of 169019427 is about 552.8986654691.

The spelling of 169019427 in words is "one hundred sixty-nine million, nineteen thousand, four hundred twenty-seven".