169391157 has 8 divisors (see below), whose sum is σ = 243228384. Its totient is φ = 104240688.

The previous prime is 169391153. The next prime is 169391219. The reversal of 169391157 is 751193961.

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

It is not a de Polignac number, because 169391157 - 2² = 169391153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169391153) 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, 2171643 + ... + 2171720.

It is an arithmetic number, because the mean of its divisors is an integer number (30403548).

Almost surely, 2^169391157 is an apocalyptic number.

It is an amenable number.

169391157 is a deficient number, since it is larger than the sum of its proper divisors (73837227).

169391157 is a wasteful number, since it uses less digits than its factorization.

169391157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343379.

The product of its digits is 51030, while the sum is 42.

The square root of 169391157 is about 13015.0358047913. The cubic root of 169391157 is about 553.3037047651.

The spelling of 169391157 in words is "one hundred sixty-nine million, three hundred ninety-one thousand, one hundred fifty-seven".